a=2+3a+7

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Solution for a=2+3a+7 equation: 



a=2+3a+7

We move all terms to the left:

a-(2+3a+7)=0

We add all the numbers together, and all the variables

a-(3a+9)=0

We get rid of parentheses

a-3a-9=0

We add all the numbers together, and all the variables

-2a-9=0

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

-2a=9

a=9/-2

a=-4+1/2

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