-5x+9=2x+21

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Solution for -5x+9=2x+21 equation: 



-5x+9=2x+21

We move all terms to the left:

-5x+9-(2x+21)=0

We get rid of parentheses

-5x-2x-21+9=0

We add all the numbers together, and all the variables

-7x-12=0

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

-7x=12

x=12/-7

x=-1+5/7

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