-9-5a=-3a-(4a-7)

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Solution for -9-5a=-3a-(4a-7) equation: 



-9-5a=-3a-(4a-7)

We move all terms to the left:

-9-5a-(-3a-(4a-7))=0



We calculate terms in parentheses: -(-3a-(4a-7)), so:

-3a-(4a-7)

We get rid of parentheses

-3a-4a+7

We add all the numbers together, and all the variables

-7a+7

Back to the equation:

-(-7a+7)



We get rid of parentheses

-5a+7a-7-9=0

We add all the numbers together, and all the variables

2a-16=0

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

2a=16

a=16/2

a=8

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