1/(x-8)=2/(x+7)

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Solution for 1/(x-8)=2/(x+7) equation: 


D( x )

x+7 = 0

x-8 = 0

x+7 = 0

x+7 = 0

x+7 = 0 // - 7

x = -7

x-8 = 0

x-8 = 0

x-8 = 0 // + 8

x = 8

x in (-oo:-7) U (-7:8) U (8:+oo)

1/(x-8) = 2/(x+7) // - 2/(x+7)

1/(x-8)-(2/(x+7)) = 0

1/(x-8)-2*(x+7)^-1 = 0

1/(x-8)-2/(x+7) = 0

(1*(x+7))/((x-8)*(x+7))+(-2*(x-8))/((x-8)*(x+7)) = 0

1*(x+7)-2*(x-8) = 0

23-x = 0

(23-x)/((x-8)*(x+7)) = 0

(23-x)/((x-8)*(x+7)) = 0 // * (x-8)*(x+7)

23-x = 0

23-x = 0 // - 23

-x = -23 // * -1

x = 23

x = 23

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