108=-4(-7-5a)

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Solution for 108=-4(-7-5a) equation: 



108=-4(-7-5a)

We move all terms to the left:

108-(-4(-7-5a))=0

We add all the numbers together, and all the variables

-(-4(-5a-7))+108=0



We calculate terms in parentheses: -(-4(-5a-7)), so:

-4(-5a-7)

We multiply parentheses

20a+28

Back to the equation:

-(20a+28)



We get rid of parentheses

-20a-28+108=0

We add all the numbers together, and all the variables

-20a+80=0

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

-20a=-80

a=-80/-20

a=+4

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