135=-3(-7-4a)+8

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Solution for 135=-3(-7-4a)+8 equation: 



135=-3(-7-4a)+8

We move all terms to the left:

135-(-3(-7-4a)+8)=0

We add all the numbers together, and all the variables

-(-3(-4a-7)+8)+135=0



We calculate terms in parentheses: -(-3(-4a-7)+8), so:

-3(-4a-7)+8

We multiply parentheses

12a+21+8

We add all the numbers together, and all the variables

12a+29

Back to the equation:

-(12a+29)



We get rid of parentheses

-12a-29+135=0

We add all the numbers together, and all the variables

-12a+106=0

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

-12a=-106

a=-106/-12

a=8+5/6

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