3x+2+x=7-x

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



3x+2+x=7-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

4x-(-1x+7)+2=0

We get rid of parentheses

4x+1x-7+2=0

We add all the numbers together, and all the variables

5x-5=0

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

5x=5

x=5/5

x=1

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