7/y-8/9

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Solution for 7/y-8/9 equation: 


D( y )

y = 0

y = 0

y = 0

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

7/y-(8/9) = 0

7/y-8/9 = 0

7*y^-1 = 8/9 // : 7

y^-1 = 8/63

-1 < 0

1/(y^1) = 8/63 // * y^1

1 = 8/63*y^1 // : 8/63

63/8 = y^1

y = 63/8

y = 63/8

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