9a-18=63-9a

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Solution for 9a-18=63-9a equation: 



9a-18=63-9a

We move all terms to the left:

9a-18-(63-9a)=0

We add all the numbers together, and all the variables

9a-(-9a+63)-18=0

We get rid of parentheses

9a+9a-63-18=0

We add all the numbers together, and all the variables

18a-81=0

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

18a=81

a=81/18

a=4+1/2

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