1/4=5/y

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Solution for 1/4=5/y equation: 


D( y )

y = 0

y = 0

y = 0

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

1/4 = 5/y // - 5/y

1/4-(5/y) = 0

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

-5*y^-1 = -1/4 // : -5

y^-1 = 1/20

-1 < 0

1/(y^1) = 1/20 // * y^1

1 = 1/20*y^1 // : 1/20

20 = y^1

y = 20

y = 20

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