2/y-7/9

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Solution for 2/y-7/9 equation: 


D( y )

y = 0

y = 0

y = 0

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

2/y-(7/9) = 0

2/y-7/9 = 0

2*y^-1 = 7/9 // : 2

y^-1 = 7/18

-1 < 0

1/(y^1) = 7/18 // * y^1

1 = 7/18*y^1 // : 7/18

18/7 = y^1

y = 18/7

y = 18/7

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