1/(2x+8)+5/(x+4)

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Solution for 1/(2x+8)+5/(x+4) equation: 


D( x )

x+4 = 0

2*x+8 = 0

x+4 = 0

x+4 = 0

x+4 = 0 // - 4

x = -4

2*x+8 = 0

2*x+8 = 0

2*x+8 = 0 // - 8

2*x = -8 // : 2

x = -8/2

x = -4

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

1/(2*x+8)+5/(x+4) = 0

(1*(x+4))/((2*x+8)*(x+4))+(5*(2*x+8))/((2*x+8)*(x+4)) = 0

1*(x+4)+5*(2*x+8) = 0

11*x+44 = 0

(11*x+44)/((2*x+8)*(x+4)) = 0

(11*x+44)/((2*x+8)*(x+4)) = 0 // * (2*x+8)*(x+4)

11*x+44 = 0

11*x+44 = 0 // - 44

11*x = -44 // : 11

x = -44/11

x = -4

x in { -4} 

x belongs to the empty set

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