120=5(4+4a)

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Solution for 120=5(4+4a) equation: 



120=5(4+4a)

We move all terms to the left:

120-(5(4+4a))=0

We add all the numbers together, and all the variables

-(5(4a+4))+120=0



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

5(4a+4)

We multiply parentheses

20a+20

Back to the equation:

-(20a+20)



We get rid of parentheses

-20a-20+120=0

We add all the numbers together, and all the variables

-20a+100=0

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

-20a=-100

a=-100/-20

a=+5

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