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(x-100)/x=20/100
We move all terms to the left:
(x-100)/x-(20/100)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
(x-100)/x-(+20/100)=0
We get rid of parentheses
(x-100)/x-20/100=0
We calculate fractions
(100x-10000)/100x+(-20x)/100x=0
We multiply all the terms by the denominator
(100x-10000)+(-20x)=0
We get rid of parentheses
100x-20x-10000=0
We add all the numbers together, and all the variables
80x-10000=0
We move all terms containing x to the left, all other terms to the right
80x=10000
x=10000/80
x=125
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