-9=3/y

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Solution for -9=3/y equation: 


D( y )

y = 0

y = 0

y = 0

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

-9 = 3/y // - 3/y

-(3/y)-9 = 0

-3*y^-1-9 = 0

-3*y^-1 = 9 // : -3

y^-1 = -3

-1 < 0

1/(y^1) = -3 // * y^1

1 = -3*y^1 // : -3

-1/3 = y^1

y = -1/3

y = -1/3

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