-2x-6=-5x+21

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Solution for -2x-6=-5x+21 equation: 



-2x-6=-5x+21

We move all terms to the left:

-2x-6-(-5x+21)=0

We get rid of parentheses

-2x+5x-21-6=0

We add all the numbers together, and all the variables

3x-27=0

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

3x=27

x=27/3

x=9

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