12-2x=21+5x

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Solution for 12-2x=21+5x equation: 



12-2x=21+5x

We move all terms to the left:

12-2x-(21+5x)=0

We add all the numbers together, and all the variables

-2x-(5x+21)+12=0

We get rid of parentheses

-2x-5x-21+12=0

We add all the numbers together, and all the variables

-7x-9=0

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

-7x=9

x=9/-7

x=-1+2/7

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