-3(-9+a)=6

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Solution for -3(-9+a)=6 equation: 



-3(-9+a)=6

We move all terms to the left:

-3(-9+a)-(6)=0

We add all the numbers together, and all the variables

-3(a-9)-6=0

We multiply parentheses

-3a+27-6=0

We add all the numbers together, and all the variables

-3a+21=0

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

-3a=-21

a=-21/-3

a=+7

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