2x-4+2x=31-x

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Solution for 2x-4+2x=31-x equation: 



2x-4+2x=31-x

We move all terms to the left:

2x-4+2x-(31-x)=0

We add all the numbers together, and all the variables

2x+2x-(-1x+31)-4=0

We add all the numbers together, and all the variables

4x-(-1x+31)-4=0

We get rid of parentheses

4x+1x-31-4=0

We add all the numbers together, and all the variables

5x-35=0

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

5x=35

x=35/5

x=7

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