2x+3+3x=4+x-21

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Solution for 2x+3+3x=4+x-21 equation: 



2x+3+3x=4+x-21

We move all terms to the left:

2x+3+3x-(4+x-21)=0

We add all the numbers together, and all the variables

2x+3x-(x-17)+3=0

We add all the numbers together, and all the variables

5x-(x-17)+3=0

We get rid of parentheses

5x-x+17+3=0

We add all the numbers together, and all the variables

4x+20=0

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

4x=-20

x=-20/4

x=-5

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