-2a=-9a+63

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Solution for -2a=-9a+63 equation: 



-2a=-9a+63

We move all terms to the left:

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

We get rid of parentheses

-2a+9a-63=0

We add all the numbers together, and all the variables

7a-63=0

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

7a=63

a=63/7

a=9

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