-15x=84-8x

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Solution for -15x=84-8x equation: 



-15x=84-8x

We move all terms to the left:

-15x-(84-8x)=0

We add all the numbers together, and all the variables

-15x-(-8x+84)=0

We get rid of parentheses

-15x+8x-84=0

We add all the numbers together, and all the variables

-7x-84=0

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

-7x=84

x=84/-7

x=-12

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