x/(4+x)=15/25

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Solution for x/(4+x)=15/25 equation: 



x/(4+x)=15/25

We move all terms to the left:

x/(4+x)-(15/25)=0



Domain of the equation: (4+x)!=0

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

x!=-4

x∈R



We add all the numbers together, and all the variables

x/(x+4)-(+15/25)=0

We get rid of parentheses

x/(x+4)-15/25=0

We calculate fractions


25x/(25x+100)+(-15x-60)/(25x+100)=0

We multiply all the terms by the denominator


25x+(-15x-60)=0

We get rid of parentheses

25x-15x-60=0

We add all the numbers together, and all the variables

10x-60=0

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

10x=60

x=60/10

x=6

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