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X+X+2X+X-3=1.09
We move all terms to the left:
X+X+2X+X-3-(1.09)=0
We add all the numbers together, and all the variables
5X-4.09=0
We move all terms containing X to the left, all other terms to the right
5X=4.09
X=4.09/5
X=3.7522935779817/4.5871559633028
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