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X+(X+5)+2X=23
We move all terms to the left:
X+(X+5)+2X-(23)=0
We add all the numbers together, and all the variables
3X+(X+5)-23=0
We get rid of parentheses
3X+X+5-23=0
We add all the numbers together, and all the variables
4X-18=0
We move all terms containing X to the left, all other terms to the right
4X=18
X=18/4
X=4+1/2
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