18-6a=3(a+3)

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Solution for 18-6a=3(a+3) equation: 



18-6a=3(a+3)

We move all terms to the left:

18-6a-(3(a+3))=0



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

3(a+3)

We multiply parentheses

3a+9

Back to the equation:

-(3a+9)



We get rid of parentheses

-6a-3a-9+18=0

We add all the numbers together, and all the variables

-9a+9=0

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

-9a=-9

a=-9/-9

a=1

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