12x-15=3(2x+9)

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Solution for 12x-15=3(2x+9) equation: 



12x-15=3(2x+9)

We move all terms to the left:

12x-15-(3(2x+9))=0



We calculate terms in parentheses: -(3(2x+9)), so:

3(2x+9)

We multiply parentheses

6x+27

Back to the equation:

-(6x+27)



We get rid of parentheses

12x-6x-27-15=0

We add all the numbers together, and all the variables

6x-42=0

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

6x=42

x=42/6

x=7

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