Thank you sir for this, but I'm still confused. Please sir when do we use addition or substraction in elimination method, in one of ur videos you used addition but here you substraction. Please clarify me on this. God bless you mightily.
You use addition when the variables you want to eliminate have different signs (+ and -) or (- and +) . For same signs (+ and +) or (- and -) you subtract. Hope you get it?
X = 2 Y = 3 Z = 1 1) I add the 3 equations, leaving that a) 7X + 6Y = 32 * (9) = 63X + 54Y = 288 b) -9X + 19Y = 39 * ( 7) = - 63X + 133Y = 273 Adding, we have that: 187 Y = 561 Y = 3 c) 7X + 18 = 32 X = 2 d) 4 + 9 - 5Z = 8 Z = 1 It takes a little work, but it's cool!
I really love your teachings
Very easy to understand
In Only your video I get question with complete explaineation
❤👌
Thanks it's clear 🙏
Thankyou sir
if you first eliminate x with eqn 1 and eqn 2 is it possible to eliminate another x by eqn 2 and eqn 3
Thanks sir apart from dis method is it possible to use other method?
Thank God for dis soving
Thanks sir😊
Why is it that,when you eliminate x from the 1st equation,you get wrong values of y an z?🤥
Thank you sir for this, but I'm still confused. Please sir when do we use addition or substraction in elimination method, in one of ur videos you used addition but here you substraction. Please clarify me on this. God bless you mightily.
You use addition when the variables you want to eliminate have different signs (+ and -) or (- and +) . For same signs (+ and +) or (- and -) you subtract. Hope you get it?
Thanks sir your explanation is complete
X = 2
Y = 3
Z = 1
1) I add the 3 equations, leaving that
a) 7X + 6Y = 32 * (9) = 63X + 54Y = 288
b) -9X + 19Y = 39 * ( 7) = - 63X + 133Y = 273
Adding, we have that: 187 Y = 561
Y = 3
c) 7X + 18 = 32
X = 2
d) 4 + 9 - 5Z = 8
Z = 1
It takes a little work, but it's cool!
Hello sir
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