8/(x+1)=-20/(x+8)

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Solution for 8/(x+1)=-20/(x+8) equation: 


D( x )

x+1 = 0

x+8 = 0

x+1 = 0

x+1 = 0

x+1 = 0 // - 1

x = -1

x+8 = 0

x+8 = 0

x+8 = 0 // - 8

x = -8

x in (-oo:-8) U (-8:-1) U (-1:+oo)

8/(x+1) = -20/(x+8) // + -20/(x+8)

8/(x+1)-(-20/(x+8)) = 0

8/(x+1)+20*(x+8)^-1 = 0

8/(x+1)+20/(x+8) = 0

(8*(x+8))/((x+1)*(x+8))+(20*(x+1))/((x+1)*(x+8)) = 0

8*(x+8)+20*(x+1) = 0

28*x+84 = 0

(28*x+84)/((x+1)*(x+8)) = 0

(28*x+84)/((x+1)*(x+8)) = 0 // * (x+1)*(x+8)

28*x+84 = 0

28*x+84 = 0 // - 84

28*x = -84 // : 28

x = -84/28

x = -3

x = -3

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