7a-12+2a=3(3a-3)

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Solution for 7a-12+2a=3(3a-3) equation: 



7a-12+2a=3(3a-3)

We move all terms to the left:

7a-12+2a-(3(3a-3))=0

We add all the numbers together, and all the variables

9a-(3(3a-3))-12=0



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

3(3a-3)

We multiply parentheses

9a-9

Back to the equation:

-(9a-9)



We get rid of parentheses

9a-9a+9-12=0

We add all the numbers together, and all the variables

-3!=0

There is no solution for this equation

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