18-6a=4a-6(a+3)

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Solution for 18-6a=4a-6(a+3) equation: 



18-6a=4a-6(a+3)

We move all terms to the left:

18-6a-(4a-6(a+3))=0



We calculate terms in parentheses: -(4a-6(a+3)), so:

4a-6(a+3)

We multiply parentheses

4a-6a-18

We add all the numbers together, and all the variables

-2a-18

Back to the equation:

-(-2a-18)



We get rid of parentheses

-6a+2a+18+18=0

We add all the numbers together, and all the variables

-4a+36=0

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

-4a=-36

a=-36/-4

a=+9

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