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X-X(0.08)=100
We move all terms to the left:
X-X(0.08)-(100)=0
We multiply parentheses
X-0.08X-100=0
We add all the numbers together, and all the variables
0.92X-100=0
We move all terms containing X to the left, all other terms to the right
0.92X=100
X=100/0.92
X=108+0.64/0.92
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