a+(2*a+9)=63

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Solution for a+(2*a+9)=63 equation: 



a+(2a+9)=63

We move all terms to the left:

a+(2a+9)-(63)=0

We get rid of parentheses

a+2a+9-63=0

We add all the numbers together, and all the variables

3a-54=0

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

3a=54

a=54/3

a=18

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