15=2a+3(3a-6)

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Solution for 15=2a+3(3a-6) equation: 



15=2a+3(3a-6)

We move all terms to the left:

15-(2a+3(3a-6))=0



We calculate terms in parentheses: -(2a+3(3a-6)), so:

2a+3(3a-6)

We multiply parentheses

2a+9a-18

We add all the numbers together, and all the variables

11a-18

Back to the equation:

-(11a-18)



We get rid of parentheses

-11a+18+15=0

We add all the numbers together, and all the variables

-11a+33=0

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

-11a=-33

a=-33/-11

a=+3

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