-9x-12=-7x

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Solution for -9x-12=-7x equation: 



-9x-12=-7x

We move all terms to the left:

-9x-12-(-7x)=0

We get rid of parentheses

-9x+7x-12=0

We add all the numbers together, and all the variables

-2x-12=0

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

-2x=12

x=12/-2

x=-6

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