5(3a-3)-3(3a-7)=12

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Solution for 5(3a-3)-3(3a-7)=12 equation: 



5(3a-3)-3(3a-7)=12

We move all terms to the left:

5(3a-3)-3(3a-7)-(12)=0

We multiply parentheses

15a-9a-15+21-12=0

We add all the numbers together, and all the variables

6a-6=0

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

6a=6

a=6/6

a=1

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