(x-100)/(x)=0.8

Solution for (x-100)/(x)=0.8 equation:

(x-100)/(x)=0.8

We move all terms to the left:

(x-100)/(x)-(0.8)=0


Domain of the equation: x!=0

x∈R


We add all the numbers together, and all the variables

(x-100)/x-0.8=0

We multiply all the terms by the denominator


(x-100)-(0.8)*x=0

We multiply parentheses

(x-100)-0.8x=0

We get rid of parentheses

x-0.8x-100=0

We add all the numbers together, and all the variables

0.2x-100=0

We move all terms containing x to the left, all other terms to the right

0.2x=100

x=100/0.2

x=500