3x+2x-3=x+21

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



3x+2x-3=x+21

We move all terms to the left:

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

We add all the numbers together, and all the variables

5x-(x+21)-3=0

We get rid of parentheses

5x-x-21-3=0

We add all the numbers together, and all the variables

4x-24=0

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

4x=24

x=24/4

x=6

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