-21x-9=x-21

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Solution for -21x-9=x-21 equation: 



-21x-9=x-21

We move all terms to the left:

-21x-9-(x-21)=0

We get rid of parentheses

-21x-x+21-9=0

We add all the numbers together, and all the variables

-22x+12=0

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

-22x=-12

x=-12/-22

x=6/11

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