9/7=18/y

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Solution for 9/7=18/y equation: 


D( y )

y = 0

y = 0

y = 0

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

9/7 = 18/y // - 18/y

9/7-(18/y) = 0

9/7-18*y^-1 = 0

-18*y^-1 = -9/7 // : -18

y^-1 = 1/14

-1 < 0

1/(y^1) = 1/14 // * y^1

1 = 1/14*y^1 // : 1/14

14 = y^1

y = 14

y = 14

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