-3(7-2x)=21-6x

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Solution for -3(7-2x)=21-6x equation: 



-3(7-2x)=21-6x

We move all terms to the left:

-3(7-2x)-(21-6x)=0

We add all the numbers together, and all the variables

-3(-2x+7)-(-6x+21)=0

We multiply parentheses

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

We get rid of parentheses

6x+6x-21-21=0

We add all the numbers together, and all the variables

12x-42=0

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

12x=42

x=42/12

x=3+1/2

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