(30+x)/(50+x)=90

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Solution for (30+x)/(50+x)=90 equation: 



(30+x)/(50+x)=90

We move all terms to the left:

(30+x)/(50+x)-(90)=0



Domain of the equation: (50+x)!=0

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

x!=-50

x∈R



We add all the numbers together, and all the variables

(x+30)/(x+50)-90=0

We multiply all the terms by the denominator


(x+30)-90*(x+50)=0

We multiply parentheses

(x+30)-90x-4500=0

We get rid of parentheses

x-90x+30-4500=0

We add all the numbers together, and all the variables

-89x-4470=0

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

-89x=4470

x=4470/-89

x=-50+20/89

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