-20a+8=2(15+a)

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Solution for -20a+8=2(15+a) equation: 



-20a+8=2(15+a)

We move all terms to the left:

-20a+8-(2(15+a))=0

We add all the numbers together, and all the variables

-20a-(2(a+15))+8=0



We calculate terms in parentheses: -(2(a+15)), so:

2(a+15)

We multiply parentheses

2a+30

Back to the equation:

-(2a+30)



We get rid of parentheses

-20a-2a-30+8=0

We add all the numbers together, and all the variables

-22a-22=0

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

-22a=22

a=22/-22

a=-1

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