12a-15=3(2a+3)

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Solution for 12a-15=3(2a+3) equation: 



12a-15=3(2a+3)

We move all terms to the left:

12a-15-(3(2a+3))=0



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

3(2a+3)

We multiply parentheses

6a+9

Back to the equation:

-(6a+9)



We get rid of parentheses

12a-6a-9-15=0

We add all the numbers together, and all the variables

6a-24=0

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

6a=24

a=24/6

a=4

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