(12+x)/(15+x)=17/20

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Solution for (12+x)/(15+x)=17/20 equation: 



(12+x)/(15+x)=17/20

We move all terms to the left:

(12+x)/(15+x)-(17/20)=0



Domain of the equation: (15+x)!=0

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

x!=-15

x∈R



We add all the numbers together, and all the variables

(x+12)/(x+15)-(+17/20)=0

We get rid of parentheses

(x+12)/(x+15)-17/20=0

We calculate fractions


(20x+240)/(20x+300)+(-17x-255)/(20x+300)=0

We multiply all the terms by the denominator


(20x+240)+(-17x-255)=0

We get rid of parentheses

20x-17x+240-255=0

We add all the numbers together, and all the variables

3x-15=0

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

3x=15

x=15/3

x=5

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