3(3-7a)=9+8a

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Solution for 3(3-7a)=9+8a equation: 



3(3-7a)=9+8a

We move all terms to the left:

3(3-7a)-(9+8a)=0

We add all the numbers together, and all the variables

3(-7a+3)-(8a+9)=0

We multiply parentheses

-21a-(8a+9)+9=0

We get rid of parentheses

-21a-8a-9+9=0

We add all the numbers together, and all the variables

-29a=0

a=0/-29

a=0

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