-84.84=-2.8(7.9+3.5a)

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Solution for -84.84=-2.8(7.9+3.5a) equation: 



-84.84=-2.8(7.9+3.5a)

We move all terms to the left:

-84.84-(-2.8(7.9+3.5a))=0

We add all the numbers together, and all the variables

-(-2.8(3.5a+7.9))-84.84=0



We calculate terms in parentheses: -(-2.8(3.5a+7.9)), so:

-2.8(3.5a+7.9)

We multiply parentheses

-8.4a-22.12

Back to the equation:

-(-8.4a-22.12)



We get rid of parentheses

8.4a+22.12-84.84=0

We add all the numbers together, and all the variables

8.4a-62.72=0

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

8.4a=62.72

a=62.72/8.4

a=7+2.0416666666667/4.375

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