X-3=21-2x=

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



X-3=21-2X=

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

X+2X-21-3=0

We add all the numbers together, and all the variables

3X-24=0

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

3X=24

X=24/3

X=8

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