15/y=40/12

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Solution for 15/y=40/12 equation: 


D( y )

y = 0

y = 0

y = 0

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

15/y = 40/12 // - 40/12

15/y-(40/12) = 0

15/y-10/3 = 0

15*y^-1 = 10/3 // : 15

y^-1 = 2/9

-1 < 0

1/(y^1) = 2/9 // * y^1

1 = 2/9*y^1 // : 2/9

9/2 = y^1

y = 9/2

y = 9/2

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