3x-3=6x-21

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Solution for 3x-3=6x-21 equation: 



3x-3=6x-21

We move all terms to the left:

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

We get rid of parentheses

3x-6x+21-3=0

We add all the numbers together, and all the variables

-3x+18=0

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

-3x=-18

x=-18/-3

x=+6

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