7a=9+9a

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Solution for 7a=9+9a equation: 



7a=9+9a

We move all terms to the left:

7a-(9+9a)=0

We add all the numbers together, and all the variables

7a-(9a+9)=0

We get rid of parentheses

7a-9a-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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