-12-7x=-2x-x

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Solution for -12-7x=-2x-x equation: 



-12-7x=-2x-x

We move all terms to the left:

-12-7x-(-2x-x)=0

We add all the numbers together, and all the variables

-7x-(-3x)-12=0

We get rid of parentheses

-7x+3x-12=0

We add all the numbers together, and all the variables

-4x-12=0

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

-4x=12

x=12/-4

x=-3

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