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

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



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

We move all terms to the left:

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

We multiply parentheses

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



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

2(3a-9)

We multiply parentheses

6a-18

Back to the equation:

-(6a-18)



We get rid of parentheses

3a-6a+18+3=0

We add all the numbers together, and all the variables

-3a+21=0

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

-3a=-21

a=-21/-3

a=+7

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