-9x+21=2x-1

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Solution for -9x+21=2x-1 equation: 



-9x+21=2x-1

We move all terms to the left:

-9x+21-(2x-1)=0

We get rid of parentheses

-9x-2x+1+21=0

We add all the numbers together, and all the variables

-11x+22=0

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

-11x=-22

x=-22/-11

x=+2

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