-4=5(7a+8)-2(1+7a)

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Solution for -4=5(7a+8)-2(1+7a) equation: 



-4=5(7a+8)-2(1+7a)

We move all terms to the left:

-4-(5(7a+8)-2(1+7a))=0

We add all the numbers together, and all the variables

-(5(7a+8)-2(7a+1))-4=0



We calculate terms in parentheses: -(5(7a+8)-2(7a+1)), so:

5(7a+8)-2(7a+1)

We multiply parentheses

35a-14a+40-2

We add all the numbers together, and all the variables

21a+38

Back to the equation:

-(21a+38)



We get rid of parentheses

-21a-38-4=0

We add all the numbers together, and all the variables

-21a-42=0

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

-21a=42

a=42/-21

a=-2

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