-4a-8a=-7(6a-6)+6(7a+7)

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Solution for -4a-8a=-7(6a-6)+6(7a+7) equation: 



-4a-8a=-7(6a-6)+6(7a+7)

We move all terms to the left:

-4a-8a-(-7(6a-6)+6(7a+7))=0

We add all the numbers together, and all the variables

-12a-(-7(6a-6)+6(7a+7))=0



We calculate terms in parentheses: -(-7(6a-6)+6(7a+7)), so:

-7(6a-6)+6(7a+7)

We multiply parentheses

-42a+42a+42+42

We add all the numbers together, and all the variables

84

Back to the equation:

-(84)



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

-12a=84

a=84/-12

a=-7

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