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

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


D( y )

y+7 = 0

y+7 = 0

y+7 = 0

y+7 = 0 // - 7

y = -7

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

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

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

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

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

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

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

y-9+7 = 0

y-2 = 0

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

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

y-2 = 0

y-2 = 0 // + 2

y = 2

y = 2

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