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X+2X=4.7
We move all terms to the left:
X+2X-(4.7)=0
We add all the numbers together, and all the variables
3X-4.7=0
We move all terms containing X to the left, all other terms to the right
3X=4.7
X=4.7/3
X=1+1/1.7647058823529
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