3(x+7)+2x=21

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Solution for 3(x+7)+2x=21 equation: 



3(x+7)+2x=21

We move all terms to the left:

3(x+7)+2x-(21)=0

We add all the numbers together, and all the variables

2x+3(x+7)-21=0

We multiply parentheses

2x+3x+21-21=0

We add all the numbers together, and all the variables

5x=0

x=0/5

x=0

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