7a-9=3-a

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Solution for 7a-9=3-a equation: 



7a-9=3-a

We move all terms to the left:

7a-9-(3-a)=0

We add all the numbers together, and all the variables

7a-(-1a+3)-9=0

We get rid of parentheses

7a+1a-3-9=0

We add all the numbers together, and all the variables

8a-12=0

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

8a=12

a=12/8

a=1+1/2

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