3/4=9/y

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Solution for 3/4=9/y equation: 


D( y )

y = 0

y = 0

y = 0

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

3/4 = 9/y // - 9/y

3/4-(9/y) = 0

3/4-9*y^-1 = 0

-9*y^-1 = -3/4 // : -9

y^-1 = 1/12

-1 < 0

1/(y^1) = 1/12 // * y^1

1 = 1/12*y^1 // : 1/12

12 = y^1

y = 12

y = 12

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