12x-3=21+6x

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Solution for 12x-3=21+6x equation: 



12x-3=21+6x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

12x-6x-21-3=0

We add all the numbers together, and all the variables

6x-24=0

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

6x=24

x=24/6

x=4

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