-3(4-3x)=6x-21

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Solution for -3(4-3x)=6x-21 equation: 



-3(4-3x)=6x-21

We move all terms to the left:

-3(4-3x)-(6x-21)=0

We add all the numbers together, and all the variables

-3(-3x+4)-(6x-21)=0

We multiply parentheses

9x-(6x-21)-12=0

We get rid of parentheses

9x-6x+21-12=0

We add all the numbers together, and all the variables

3x+9=0

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

3x=-9

x=-9/3

x=-3

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