-3(x+6)-6=-21

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Solution for -3(x+6)-6=-21 equation: 



-3(x+6)-6=-21

We move all terms to the left:

-3(x+6)-6-(-21)=0

We add all the numbers together, and all the variables

-3(x+6)+15=0

We multiply parentheses

-3x-18+15=0

We add all the numbers together, and all the variables

-3x-3=0

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

-3x=3

x=3/-3

x=-1

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