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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2x-x-3-17=0

We add all the numbers together, and all the variables

x-20=0

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

x=20

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