-7=-7+a

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Solution for -7=-7+a equation: 



-7=-7+a

We move all terms to the left:

-7-(-7+a)=0

We add all the numbers together, and all the variables

-(a-7)-7=0

We get rid of parentheses

-a+7-7=0

We add all the numbers together, and all the variables

-a=0

a=0/-1

a=0

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