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X+(X+X)+(X+2)=105
We move all terms to the left:
X+(X+X)+(X+2)-(105)=0
We add all the numbers together, and all the variables
X+(+2X)+(X+2)-105=0
We get rid of parentheses
X+2X+X+2-105=0
We add all the numbers together, and all the variables
4X-103=0
We move all terms containing X to the left, all other terms to the right
4X=103
X=103/4
X=25+3/4
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