20.5+8.5a=3.5(8a+4)

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Solution for 20.5+8.5a=3.5(8a+4) equation: 



20.5+8.5a=3.5(8a+4)

We move all terms to the left:

20.5+8.5a-(3.5(8a+4))=0



We calculate terms in parentheses: -(3.5(8a+4)), so:

3.5(8a+4)

We multiply parentheses

28a+14

Back to the equation:

-(28a+14)



We get rid of parentheses

8.5a-28a-14+20.5=0

We add all the numbers together, and all the variables

-19.5a+6.5=0

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

-19.5a=-6.5

a=-6.5/-19.5

a=4.3333333333333/13

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