1/y=1/9+1/11

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Solution for 1/y=1/9+1/11 equation: 


D( y )

y = 0

y = 0

y = 0

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

1/y = 1/9+1/11 // - 1/9+1/11

1/y-(1/9)-(1/11) = 0

1/y-1/9-1/11 = 0

1*y^-1 = 20/99 // : 1

y^-1 = 20/99

-1 < 0

1/(y^1) = 20/99 // * y^1

1 = 20/99*y^1 // : 20/99

99/20 = y^1

y = 99/20

y = 99/20

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