-15/(2x+5)=x

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Solution for -15/(2x+5)=x equation: 


D( x )

2*x+5 = 0

2*x+5 = 0

2*x+5 = 0

2*x+5 = 0 // - 5

2*x = -5 // : 2

x = -5/2

x in (-oo:-5/2) U (-5/2:+oo)

-15/(2*x+5) = x // - x

-15/(2*x+5)-x = 0

(-x*(2*x+5))/(2*x+5)-15/(2*x+5) = 0

-x*(2*x+5)-15 = 0

-2*x^2-5*x-15 = 0

-2*x^2-5*x-15 = 0

-1*(2*x^2+5*x+15) = 0

2*x^2+5*x+15 = 0

DELTA = 5^2-(2*4*15)

DELTA = -95

DELTA < 0

-1 = 0

-1/(2*x+5) = 0

-1/(2*x+5) = 0 // * 2*x+5

-1 = 0

x belongs to the empty set

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