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(X+5.2)+X=722.8
We move all terms to the left:
(X+5.2)+X-(722.8)=0
We add all the numbers together, and all the variables
X+(X+5.2)-722.8=0
We get rid of parentheses
X+X+5.2-722.8=0
We add all the numbers together, and all the variables
2X-717.6=0
We move all terms containing X to the left, all other terms to the right
2X=717.6
X=717.6/2
X=358+1/1.25
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