3(a+2)=9a-12

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



3(a+2)=9a-12

We move all terms to the left:

3(a+2)-(9a-12)=0

We multiply parentheses

3a-(9a-12)+6=0

We get rid of parentheses

3a-9a+12+6=0

We add all the numbers together, and all the variables

-6a+18=0

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

-6a=-18

a=-18/-6

a=+3

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