-28-4a=-4(1-a)

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Solution for -28-4a=-4(1-a) equation: 



-28-4a=-4(1-a)

We move all terms to the left:

-28-4a-(-4(1-a))=0

We add all the numbers together, and all the variables

-4a-(-4(-1a+1))-28=0



We calculate terms in parentheses: -(-4(-1a+1)), so:

-4(-1a+1)

We multiply parentheses

4a-4

Back to the equation:

-(4a-4)



We get rid of parentheses

-4a-4a+4-28=0

We add all the numbers together, and all the variables

-8a-24=0

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

-8a=24

a=24/-8

a=-3

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