2x+3+x=7-x

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Solution for 2x+3+x=7-x equation: 



2x+3+x=7-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x+x-(-1x+7)+3=0

We add all the numbers together, and all the variables

3x-(-1x+7)+3=0

We get rid of parentheses

3x+1x-7+3=0

We add all the numbers together, and all the variables

4x-4=0

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

4x=4

x=4/4

x=1

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