x+x=23x-x=7

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Solution for x+x=23x-x=7 equation: 



x+x=23x-x=7

We move all terms to the left:

x+x-(23x-x)=0

We add all the numbers together, and all the variables

x+x-(+22x)=0

We add all the numbers together, and all the variables

2x-(+22x)=0

We get rid of parentheses

2x-22x=0

We add all the numbers together, and all the variables

-20x=0

x=0/-20

x=0

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