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x+.33x=2100
We move all terms to the left:
x+.33x-(2100)=0
We add all the numbers together, and all the variables
1.33x-2100=0
We move all terms containing x to the left, all other terms to the right
1.33x=2100
x=2100/1.33
x=1578+1/1.0555555555558
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