4x+7+x=21+3x

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Solution for 4x+7+x=21+3x equation: 



4x+7+x=21+3x

We move all terms to the left:

4x+7+x-(21+3x)=0

We add all the numbers together, and all the variables

4x+x-(3x+21)+7=0

We add all the numbers together, and all the variables

5x-(3x+21)+7=0

We get rid of parentheses

5x-3x-21+7=0

We add all the numbers together, and all the variables

2x-14=0

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

2x=14

x=14/2

x=7

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