y-9/x=5/7

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Solution for y-9/x=5/7 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

y-(9/x) = 5/7 // - 5/7

y-(9/x)-(5/7) = 0

y-9*x^-1-5/7 = 0

-9*x^-1 = -(y-5/7) // : -9

x^-1 = (5/7-y)/(-9)

-1 < 0

1/(x^1) = (5/7-y)/(-9) // * x^1

1 = x^1*((5/7-y)/(-9)) // : (5/7-y)/(-9)

-9*(5/7-y)^-1 = x^1

x = -9*(5/7-y)^-1

x = -9*(5/7-y)^-1

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