-9=-x-7

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Solution for -9=-x-7 equation: 



-9=-x-7

We move all terms to the left:

-9-(-x-7)=0

We add all the numbers together, and all the variables

-(-1x-7)-9=0

We get rid of parentheses

1x+7-9=0

We add all the numbers together, and all the variables

x-2=0

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

x=2

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