x/(100+x)=4/100

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Solution for x/(100+x)=4/100 equation: 



x/(100+x)=4/100

We move all terms to the left:

x/(100+x)-(4/100)=0



Domain of the equation: (100+x)!=0

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

x!=-100

x∈R



We add all the numbers together, and all the variables

x/(x+100)-(+4/100)=0

We get rid of parentheses

x/(x+100)-4/100=0

We calculate fractions


100x/(100x+10000)+(-4x-400)/(100x+10000)=0

We multiply all the terms by the denominator


100x+(-4x-400)=0

We get rid of parentheses

100x-4x-400=0

We add all the numbers together, and all the variables

96x-400=0

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

96x=400

x=400/96

x=4+1/6

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