(25+x)/(250+x)=20/100

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Solution for (25+x)/(250+x)=20/100 equation: 


D( x )

x+250 = 0

x+250 = 0

x+250 = 0

x+250 = 0 // - 250

x = -250

x in (-oo:-250) U (-250:+oo)

(x+25)/(x+250) = 20/100 // - 20/100

(x+25)/(x+250)-(20/100) = 0

(x+25)/(x+250)-1/5 = 0

(5*(x+25))/(5*(x+250))+(-1*(x+250))/(5*(x+250)) = 0

5*(x+25)-1*(x+250) = 0

4*x-125 = 0

(4*x-125)/(5*(x+250)) = 0

(4*x-125)/(5*(x+250)) = 0 // * 5*(x+250)

4*x-125 = 0

4*x-125 = 0 // + 125

4*x = 125 // : 4

x = 125/4

x = 125/4

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