1-5/(x+7)=4/(x+7)

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Solution for 1-5/(x+7)=4/(x+7) equation: 


D( x )

x+7 = 0

x+7 = 0

x+7 = 0

x+7 = 0 // - 7

x = -7

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

1-(5/(x+7)) = 4/(x+7) // - 4/(x+7)

1-(5/(x+7))-(4/(x+7)) = 0

1-5*(x+7)^-1-4*(x+7)^-1 = 0

1-5/(x+7)-4/(x+7) = 0

(1*(x+7))/(x+7)-5/(x+7)-4/(x+7) = 0

1*(x+7)-5-4 = 0

x-9+7 = 0

x-2 = 0

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

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

x-2 = 0

x-2 = 0 // + 2

x = 2

x = 2

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