4a-28=-8(a-7)

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Solution for 4a-28=-8(a-7) equation: 



4a-28=-8(a-7)

We move all terms to the left:

4a-28-(-8(a-7))=0



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

-8(a-7)

We multiply parentheses

-8a+56

Back to the equation:

-(-8a+56)



We get rid of parentheses

4a+8a-56-28=0

We add all the numbers together, and all the variables

12a-84=0

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

12a=84

a=84/12

a=7

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