-31=-7x-8x

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Solution for -31=-7x-8x equation: 



-31=-7x-8x

We move all terms to the left:

-31-(-7x-8x)=0

We add all the numbers together, and all the variables

-(-15x)-31=0

We get rid of parentheses

15x-31=0

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

15x=31

x=31/15

x=2+1/15

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