-18=2(4a+3)

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Solution for -18=2(4a+3) equation: 



-18=2(4a+3)

We move all terms to the left:

-18-(2(4a+3))=0



We calculate terms in parentheses: -(2(4a+3)), so:

2(4a+3)

We multiply parentheses

8a+6

Back to the equation:

-(8a+6)



We get rid of parentheses

-8a-6-18=0

We add all the numbers together, and all the variables

-8a-24=0

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

-8a=24

a=24/-8

a=-3

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