(x+7)/(x+31)=3/7

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Solution for (x+7)/(x+31)=3/7 equation: 



(x+7)/(x+31)=3/7

We move all terms to the left:

(x+7)/(x+31)-(3/7)=0



Domain of the equation: (x+31)!=0

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

x!=-31

x∈R



We add all the numbers together, and all the variables

(x+7)/(x+31)-(+3/7)=0

We get rid of parentheses

(x+7)/(x+31)-3/7=0

We calculate fractions


(7x+49)/(7x+217)+(-3x-93)/(7x+217)=0

We multiply all the terms by the denominator


(7x+49)+(-3x-93)=0

We get rid of parentheses

7x-3x+49-93=0

We add all the numbers together, and all the variables

4x-44=0

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

4x=44

x=44/4

x=11

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