138=(201+225x)/(4+x)

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Solution for 138=(201+225x)/(4+x) equation: 


D( x )

x+4 = 0

x+4 = 0

x+4 = 0

x+4 = 0 // - 4

x = -4

x in (-oo:-4) U (-4:+oo)

138 = (225*x+201)/(x+4) // - (225*x+201)/(x+4)

138-((225*x+201)/(x+4)) = 0

(-1*(225*x+201))/(x+4)+138 = 0

(-1*(225*x+201))/(x+4)+(138*(x+4))/(x+4) = 0

138*(x+4)-1*(225*x+201) = 0

351-87*x = 0

(351-87*x)/(x+4) = 0

(351-87*x)/(x+4) = 0 // * x+4

351-87*x = 0

351-87*x = 0 // - 351

-87*x = -351 // : -87

x = -351/(-87)

x = 117/29

x = 117/29

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