15x-90=4x-7

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Solution for 15x-90=4x-7 equation: 



15x-90=4x-7

We move all terms to the left:

15x-90-(4x-7)=0

We get rid of parentheses

15x-4x+7-90=0

We add all the numbers together, and all the variables

11x-83=0

We move all terms containing x to the left, all other terms to the right

11x=83

x=83/11

x=7+6/11

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