12x-6-12=21x+6

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



12x-6-12=21x+6

We move all terms to the left:

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

We add all the numbers together, and all the variables

12x-(21x+6)-18=0

We get rid of parentheses

12x-21x-6-18=0

We add all the numbers together, and all the variables

-9x-24=0

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

-9x=24

x=24/-9

x=-2+2/3

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