-86=2a-7(-a+2)

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Solution for -86=2a-7(-a+2) equation: 



-86=2a-7(-a+2)

We move all terms to the left:

-86-(2a-7(-a+2))=0

We add all the numbers together, and all the variables

-(2a-7(-1a+2))-86=0



We calculate terms in parentheses: -(2a-7(-1a+2)), so:

2a-7(-1a+2)

We multiply parentheses

2a+7a-14

We add all the numbers together, and all the variables

9a-14

Back to the equation:

-(9a-14)



We get rid of parentheses

-9a+14-86=0

We add all the numbers together, and all the variables

-9a-72=0

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

-9a=72

a=72/-9

a=-8

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