3/2=21/y

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Solution for 3/2=21/y equation: 


D( y )

y = 0

y = 0

y = 0

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

3/2 = 21/y // - 21/y

3/2-(21/y) = 0

3/2-21*y^-1 = 0

-21*y^-1 = -3/2 // : -21

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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