a-7=-(7-a)

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Solution for a-7=-(7-a) equation: 



a-7=-(7-a)

We move all terms to the left:

a-7-(-(7-a))=0

We add all the numbers together, and all the variables

a-(-(-1a+7))-7=0



We calculate terms in parentheses: -(-(-1a+7)), so:

-(-1a+7)

We get rid of parentheses

1a-7

We add all the numbers together, and all the variables

a-7

Back to the equation:

-(a-7)



We get rid of parentheses

a-a+7-7=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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