15/3=5/y

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Solution for 15/3=5/y equation: 


D( y )

y = 0

y = 0

y = 0

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

15/3 = 5/y // - 5/y

15/3-(5/y) = 0

15/3-5*y^-1 = 0

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

y^-1 = 1

-1 < 0

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

1 = 1*y^1 // : 1

1 = y^1

y = 1

y = 1

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