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x+.5x+.25x+.125x+.0625x=100
We move all terms to the left:
x+.5x+.25x+.125x+.0625x-(100)=0
We add all the numbers together, and all the variables
1.9375x-100=0
We move all terms containing x to the left, all other terms to the right
1.9375x=100
x=100/1.9375
x=51+1/1.6315789473684
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