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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

6x-3x-18+21=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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