81/y*3=27

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Solution for 81/y*3=27 equation: 


D( y )

y = 0

y = 0

y = 0

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

3*(81/y) = 27 // - 27

3*(81/y)-27 = 0

243*y^-1 = 27 // : 243

y^-1 = 1/9

-1 < 0

1/(y^1) = 1/9 // * y^1

1 = 1/9*y^1 // : 1/9

9 = y^1

y = 9

y = 9

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