-9+13x=21-2x

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Solution for -9+13x=21-2x equation: 



-9+13x=21-2x

We move all terms to the left:

-9+13x-(21-2x)=0

We add all the numbers together, and all the variables

13x-(-2x+21)-9=0

We get rid of parentheses

13x+2x-21-9=0

We add all the numbers together, and all the variables

15x-30=0

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

15x=30

x=30/15

x=2

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