3(x-4)=6x-21

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



3(x-4)=6x-21

We move all terms to the left:

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

We multiply parentheses

3x-(6x-21)-12=0

We get rid of parentheses

3x-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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