-7=-7-9x

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



-7=-7-9x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

9x+7-7=0

We add all the numbers together, and all the variables

9x=0

x=0/9

x=0

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