(x+2)+(x+1)+(x-1)=23

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Solution for (x+2)+(x+1)+(x-1)=23 equation: 



(x+2)+(x+1)+(x-1)=23

We move all terms to the left:

(x+2)+(x+1)+(x-1)-(23)=0

We get rid of parentheses

x+x+x+2+1-1-23=0

We add all the numbers together, and all the variables

3x-21=0

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

3x=21

x=21/3

x=7

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