y-4/x=2/5

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Solution for y-4/x=2/5 equation: 


D( x )

x = 0

x = 0

x = 0

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

y-(4/x) = 2/5 // - 2/5

y-(4/x)-(2/5) = 0

y-4*x^-1-2/5 = 0

-4*x^-1 = -(y-2/5) // : -4

x^-1 = (2/5-y)/(-4)

-1 < 0

1/(x^1) = (2/5-y)/(-4) // * x^1

1 = x^1*((2/5-y)/(-4)) // : (2/5-y)/(-4)

-4*(2/5-y)^-1 = x^1

x = -4*(2/5-y)^-1

x = -4*(2/5-y)^-1

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