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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-20a-(-7(a-1))-32=0



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

-7(a-1)

We multiply parentheses

-7a+7

Back to the equation:

-(-7a+7)



We get rid of parentheses

-20a+7a-7-32=0

We add all the numbers together, and all the variables

-13a-39=0

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

-13a=39

a=39/-13

a=-3

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