-3(a-3)+6(2a-2)=15

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Solution for -3(a-3)+6(2a-2)=15 equation: 



-3(a-3)+6(2a-2)=15

We move all terms to the left:

-3(a-3)+6(2a-2)-(15)=0

We multiply parentheses

-3a+12a+9-12-15=0

We add all the numbers together, and all the variables

9a-18=0

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

9a=18

a=18/9

a=2

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