3(a-1)=2a+9

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Solution for 3(a-1)=2a+9 equation: 



3(a-1)=2a+9

We move all terms to the left:

3(a-1)-(2a+9)=0

We multiply parentheses

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

We get rid of parentheses

3a-2a-9-3=0

We add all the numbers together, and all the variables

a-12=0

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

a=12

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