Solving algebra fractions to find the value of x
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- Опубліковано 7 вер 2024
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This video is all about solving algebra fractions to find the value of x and forms part of the playlist on solving algebraic fractions. I've also added to the playlist on GCSE higher revision.
I hope the video helps and please do leave a comment - thanks!
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I like how the ads in this video says ‘r u still searching for maths tutorial from 2016 and do they really work’
pro trick : watch series at Flixzone. I've been using them for watching all kinds of movies these days.
@Frederick Ahmed Yup, have been using Flixzone for since november myself =)
Minecraft
The problem why I struggle with algebra is because I'm just blindly following steps. I don't know why I do what I do in algebra because I just follow a method. That's what makes learning algebra hard and forgettable for me.
Hi - yes, totally agree. It's very difficult to see the maths, when all you see is a bunch of topics.
Same man
Just get good
@@seadrown6252 we are all here bcs of the same reason-
I know this comment is two years old but I have been there and I want to advise anyone else who is struggling that sheer repetition was key for me to 'get' this. I must have watched about twenty videos several times on the subject. I had to blindly follow the steps at first and then with repeated practice it began to sink in and I started to spot patterns and develop an intuition about what to do. Now I can do them and the example in the video was no problem for me. Good luck.
im in sophomore year and i pretty much forgot all the basics. this helped. a lot, thanks.
That’s great and glad to help - all very best S :-)
This is exactly what I’m looking for
Simon Deacon saving lives out here bless up
Thank you soo much sir iam a medical student but this help me in my physics numericals ..soo much love from INDIA ☺
You can move the x to the left because x^2 minus 2x^2 is -1x^2 but because ou square it, its still positive x^2
thank you very much for teaching this step by step
thankyou! I finally understand this
Thank you tons for this video but I was wondering about what would you do if there are three or more fractions in the equation?
Hi - here's a playlist with a couple of examples: ua-cam.com/play/PLPglScc3TJ-PXB8UMymFJ_g1LPBSumNSJ.html. Hope they help and all very best S :-)
Hey , I was really understanding until you took the denominator and put it on the right side of the = sign ....could you or anyone please explain why he did that to me?
Hi - this is a technique called 'cross multiplication.' Imagine that you have:
x / y = 3 / 4
By cross multiplying this is exactly the same as 4x = 3y.
With the question you've got 1/1 on the right hand side so you can cross multiply to:
1 x (xsquared + 9x - 12) = 1 x (2x - 3)(x + 1)
Hope that's OK and all best S
Simon Deacon thank you so much
@@Jenyaxx-us5zn You thanked him after 1 year 😯
@@aminahanfi3399 And you told her after 2 years
@@eviejane609 Because I got this video in my recommendation after 2 years and even you also told me this after 1 hour
I love this particular video
Hi Simon, can you help? I was able to follow everything except that you got rid of one pair of the brackets (one each of the two terms) in the denominator when you made it into one fraction? Why did they become only (2x-3) (x+1) instead of the two pairs of these? And how come they aren't multiplied out in the denominator? Thank you
Hi - the idea of making both individual fractions to have the same denominator, is so that I can combine them into one fraction. It’s the same as adding say:
1/3 + 1/4
The common denominator is 12, so I can rewrite as
4/12 + 3/12
Which then combines to 7/12.
Hope that’s OK and all best S
Thank you I finally understand
Thank you for helping me understand the math work!!!
@Simon Deacon how about when it just says to simplify not solve for X?
Hi - I’ll post some more videos on this. In the meantime here’s a playlist that might help: ua-cam.com/play/PLPglScc3TJ-OUVqJxpOXmITJLdniEwJIj.html. Best S
How to solve this problem,
Find x,y,z
37/13 = 2+ 1/x+1/y+1/z
thank you
Thanks this really helped. Pls can you tell me what level grade this question was in the UK.
Ali Ahmad Hi - I think it would be around a grade 6. Best S
Nice explanation
At 1:47 I got lost on what you did with the fractions
Great video! Thanks for the help! 🙏🏻
very good
omg this is so helpful thank you so much :))
That’s great and glad to help - all very best S :-)
there are three type of people watching this vid.
1. need maths help
2. putting the sound up high so your mum listening outside your door knows you are revising, ( but really on instagram]
3. watching this for no reason
comment what you are.
jana moffett u missed last minute cram
trying to learn 3 years worth of content for my first exam in 2 weeks :))))
I got an exam Tommorow 😬
what about if the 1 on the right hand side of the equation is a bigger number? i multiplied by the brackets but it leaves me with huge numbers which are difficult to factorise
Thank you!
A man covered a certain distance at some speed. Had he moved 3 kmph faster, he would have taken 40 minutes less. If he had moved 2 kmph slower, he would have taken 40 minutes more. The distance (in km) is:
sir i can make this questions equation but I can't solve please cover in one of your video thanks
ok sir I shall do that
right bro
Around 5:00 you mention that 9 x becomes minus, how did you work that out? I'm following most of this, but feel there are some crucial points missing.. Many thanks for your video Simon
Nope it's ok, I'm just being slow. Anyone else confused, it's just about balancing the equation. To remove + 9x we have to - 9 x on the left hand side. Whatever we do on one side, we should do to the other..
Thanks again for the videos
@@youngun550 No worries and exactly correct - you are balancing the equation around the equals sign. All best with your studies S
Sir, please I want to ask that at the point where you tidied up to the right side, can you also try the other way round and arrive at the same answers? I tried tyding up to the left side but I got x=9 and -x=1. Pls I want you to help me.
Hi - you should be able to work either way, although you'll need to add / takeaway the fractions first. Here's a playlist on dealing with linear equations that might help: ua-cam.com/play/PLPglScc3TJ-Mvi9Gk651-7y-bUJKC2y4H.html. All best S :-)
I have a question similar to this but it says give your answer as surds, how would I do it??
What would you do if instead of 1 it was already 0?
Hi - there would usually be a way of solving … do you have a particular question in mind? All best S :-)
Great example, thank you.
Very welcome and glad to help - all best S :-)
4:50 im confused, Why is he changing the signs when combining terms??
He does??
Thank u very much. 💕💕 Realy helped alot😚😚
Somehow it looks wrong.Please explain to me how x can have two values in the same initial ecuation.And how to you split the ecuation at the end if they are beeing multiplyed?
Hi - x is the same value in each part of the equation. It's just with one part we're multiplying it by 2 and then takeaway 3. In another part we're just adding 1 to the x value. Best S
Thank you,i did understand shortly after....all i needed to do was to take a better look.Thank you very much.
Can u do this with 3 fractions please
Hi - unfortunately I don’t think I’ve got any with three fractions, although here is the playlist: Working with algebra fractions
If you’ve got a specific question I’ll be happy to create a video. Best S
@@3minutemaths hi Simon it’s grand man just finished my test sending love from all the way from Ireland
Good video though thanks
This was so helpful thanks!
Where's the second fraction gone?
Thank you so much i learnt a lot
Just wondering what level this is? Thanks for the help bro you're a mathematical Lifesaver. 👍
Hi - glad to help. This would be around grade 7 ish. All best S :-)
Really great video and explanation
This comment is super old, but thank you so much!
Thanks for this, I have an exam tomorrow.
All best with your test!
@@3minutemaths thank you Mr😄
good
nice stuff
Can you please write a little bit more big the numbers and x thank you
So at the end if it was -9 and -1 how did you end up with x being positive 9 and 1?
Hi - split them into two solutions ... so you get (x - 9) = 0
If I then add 9 to both sides I get x = 9
Same with (x - 1) = 0
Here's an overview video that might help: ua-cam.com/video/FLDQRC3F49g/v-deo.html
Hope that's OK and all best S
can someone tell me what is -3x=32?
Hi - divide through by -3
x = -32/3 or -10 2/3 or -10.6 recurring.
Best S
Thanks sir ...
Very welcome and glad to help - all best S :-)
Great Video!
Helpful but the hand writing really makes it difficult to go back and look over the equation while watching.
Hi - yes, handwriting is definitely something I need to work on :-)
Why do you timed the x by x times 1
Hi - whereabouts?
Dang, coming in clutch
wait when you moved the +9x over to the -x, wouldn't moving +9x make it a -9x? then because your subtracting it wouldn't it be -x subtract -9x becoming -x + 9x?
Hi - Great question and appreciate the comment. It's not -x - -9x , which would be -x + 9x as you mentioned. Instead, (forget the other terms):
+9x = -x
So, I need to get the +9x on the right hand side .... this is done by -9x to both sides of the equals sign, and 'balances' the equation around the equals sign (think of it like a playground seesaw)
-9x + 9x = -x - 9x
On the left side I get 0 (nothing), on the right side I get -10x
0 = -10x
Hope that helps and all best S
@@3minutemaths oh you’re totally right thanks for the amazing feedback and consistency to reply to a video made 3 years ago. Keep it up!
@@kurth.y Glad to help and all best with your studies :-)
It can be explained in a more clear and simplified way.
How?
Yh there's an easier way
But it still involves factorising at the end when the expression is equal to 0
You could have done cross multiplication at the beginning
You could have done cross multiplication at the beginning
If you reply to my comment it would be like a dream.
Btw your the best teacher
Lol - thank you! :-)
how about the denominator has square root
Hi - here’s an example video and hope it helps: ua-cam.com/video/l5_8A9X0IB0/v-deo.html. All best S
I used this to answer a questionx+2/3x + x-2/2x = 3I got it down to 0=13x^2 + 2xI'm a bit stuck now, can anyone help?
Hi - please could you check the question? Happy to help but it seems a little over complex. Best S
Simon Deacon, it's genuine
I was understanding everything, but got lost at 4:16 - 5:29 .Could anyone explain?
Hi - to factorise, I need to make the equation equal to zero. Here's a playlist that might help: ua-cam.com/play/PLPglScc3TJ-PgEVPNvC2blKA0zlg5hQVT.html. Best S
how shoul we do this sum
1/3(x-1)-1/4(x-2)=1
It would be (1-1)/(3x-3)(4x-8)=1
but that is the same as 0/12x^2-36+24=1 and you can't divide something by 0 so you would have to use another method.
What kind of pen are you using here? Pls respond
Hi - it's just a normal black biro ... although the latest videos are with a purple one :-)
Wwhat if it were to be = 0. Then what
Exars Hi - they would always make a question where the answer worked out. If it's equal to zero just treat the same way. Best S
So...the 1 disappears?
Hi - yes, as the right hand side becomes 1 x (2x-3)(x+1), which just becomes (2x-3)(x+1). Hope that's OK and all best S
Thanks :)
yh if it was equal to 2 youd times it by 2 but it this case it was 1 so nothing needed be done
That's a good exercise
How many marks is this worth? Thanks
Usually 3 ...
imagine bein 12 nd tryin to memorise all this RIP
ha im 10 and im trying to memorise this RIP me
Easy
how the hell did you get 9x from 8x ?????
Where did that 9x come from?
Hi - around 3.23 - x + 8x on the top line of the fraction. Best S
goog teacher
when your teacher aint shit
How about this, -2x + 1 = 0 , what is the value of x?
Hi - the main problem is -2x, so add 2x to both sides
+1 = 2x
Then divide by 2
1/2 = x
So x is 1/2.
Hope that helps and all best S :-)
@@3minutemaths Thank you very much for the reply sir. I now fully understand the problem. I thought the X will remain negative, that makes me confuse at first.
this is perfect but i need this with the fractions being multiplied instead bruhhh 😭😭😭
Hi - here’s a playlist with some more examples and hope it helps: ua-cam.com/play/PLPglScc3TJ-PXB8UMymFJ_g1LPBSumNSJ.html. All best S :-)
@@3minutemaths omg thank you so much!!!! :)
There is a need to verify that the solutions are "good". That they do not zero 2x-3 or x+1
What grade was this? I'm in year 9 and I still got it right!!! 😄
Abdulrahman Ahmed your extremely cool
I’m in 7th lol
Its a grade 5 question... kidding idek :)
Idk haha I’m in year 8 and I found it hard but I somehow got it too
I'm in year 7....I am from Canada.....I don't know anything....
I lost you when you left out the 4(2x-3)
Ah - sorry about that - but great that you identified the particular step :-)
So what’s the final answer?
Hi - around 6:41 … x = 1 or x = 9. Best S :-)
Thank you, I was wondering if you could post more problems similar to these
@@arelyvelazquez6283 Hi - here's a playlist that might help: ua-cam.com/play/PLPglScc3TJ-PXB8UMymFJ_g1LPBSumNSJ.html. All best S :-)
Handwriting is confusing
bad
Totally didn't zone out at all...
Read more
same tho
4:50 im confused, Why is he changing the signs when combining terms??
Joshua C
Hi - I’m not changing the terms .... I’m just putting everything on the right hand side so I can make the equation equal to zero. 5.46 the 2x and -3x (on the right) becomes -x.
Then I bring over the 9x on the left hand, this is now a negative as I’m subtracting 9x from both sides. So -x -9x = -10x
Same with the -12 on the left side. It becomes +12 when taken to the right.
Hope that’s not too confusing... it’s quite a difficult problem.
Best S
how shoul we do this sum
1/3(x-1)-1/4(x-2)=1
Selva Nayagam - Hi - (This is a little difficult to show on a text comment)
Your question is the same as writing (x-1)/3 - (x-2)/4 = 1
Make both denominators the same
4(x-1)/12 - [3(x-2)/12] = 1
I’ve used the square brackets as the centre minus sign can cause a problem
Multiply out (4x-4)/12 - [(3x-6)/12] = 1
Lose the brackets (4x -4 - 3x + 6)/12 = 1
Tidy up (x+2)/12 = 1
Multiply through by 12 (x+2)= 12
Minus 2 both sides
X = 10
Hope this helps and all best S