80=2(5a+5)

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Solution for 80=2(5a+5) equation: 



80=2(5a+5)

We move all terms to the left:

80-(2(5a+5))=0



We calculate terms in parentheses: -(2(5a+5)), so:

2(5a+5)

We multiply parentheses

10a+10

Back to the equation:

-(10a+10)



We get rid of parentheses

-10a-10+80=0

We add all the numbers together, and all the variables

-10a+70=0

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

-10a=-70

a=-70/-10

a=+7

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