4/5=(x+5)/15

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Solution for 4/5=(x+5)/15 equation: 



4/5=(x+5)/15

We move all terms to the left:

4/5-((x+5)/15)=0

We calculate fractions


(-((x+5)*5)/()+()/()=0



We calculate terms in parentheses: +(-((x+5)*5)/()+()/(), so:

-((x+5)*5)/()+()/(

We add all the numbers together, and all the variables

-((x+5)*5)/()+1

We multiply all the terms by the denominator


-((x+5)*5)+1*()



We calculate terms in parentheses: -((x+5)*5), so:

(x+5)*5

We multiply parentheses

5x+25

Back to the equation:

-(5x+25)



We add all the numbers together, and all the variables

-(5x+25)

We get rid of parentheses

-5x-25

Back to the equation:

+(-5x-25)



We get rid of parentheses

-5x-25=0

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

-5x=25

x=25/-5

x=-5

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