-2=2(a+8)

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



-2=2(a+8)

We move all terms to the left:

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



We calculate terms in parentheses: -(2(a+8)), so:

2(a+8)

We multiply parentheses

2a+16

Back to the equation:

-(2a+16)



We get rid of parentheses

-2a-16-2=0

We add all the numbers together, and all the variables

-2a-18=0

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

-2a=18

a=18/-2

a=-9

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