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X+X+X/2=40
We move all terms to the left:
X+X+X/2-(40)=0
We add all the numbers together, and all the variables
2X+X/2-40=0
We multiply all the terms by the denominator
2X*2+X-40*2=0
We add all the numbers together, and all the variables
X+2X*2-80=0
Wy multiply elements
X+4X-80=0
We add all the numbers together, and all the variables
5X-80=0
We move all terms containing X to the left, all other terms to the right
5X=80
X=80/5
X=16
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