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

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



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

We move all terms to the left:

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

We multiply parentheses

2a-(3(a-1))+18=0



We calculate terms in parentheses: -(3(a-1)), so:

3(a-1)

We multiply parentheses

3a-3

Back to the equation:

-(3a-3)



We get rid of parentheses

2a-3a+3+18=0

We add all the numbers together, and all the variables

-1a+21=0

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

-a=-21

a=-21/-1

a=+21

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