X-9+3x+2=21-3x

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Solution for X-9+3x+2=21-3x equation: 



X-9+3X+2=21-3X

We move all terms to the left:

X-9+3X+2-(21-3X)=0

We add all the numbers together, and all the variables

X+3X-(-3X+21)-9+2=0

We add all the numbers together, and all the variables

4X-(-3X+21)-7=0

We get rid of parentheses

4X+3X-21-7=0

We add all the numbers together, and all the variables

7X-28=0

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

7X=28

X=28/7

X=4

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