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x+(2x)=1.1
We move all terms to the left:
x+(2x)-(1.1)=0
We add all the numbers together, and all the variables
3x-1.1=0
We move all terms containing x to the left, all other terms to the right
3x=1.1
x=1.1/3
x=1/2.7272727272727
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