What is the value of X in this Question ?

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[@Mal1234567]

I solved this one in my head in 3/2 seconds.

[@internaute67]

It is really exciting following your courses . I ☹️ cannot find the appropriate words to thank you the right way 👍

[@learncommunolizer]

Thank you very much!

[@TeiuAl]

Beautiful handwriting, dude!

[@learncommunolizer]

Thank you so much !

[@stevesilva2780]

I solved it, but needed to use logarithms.