3/y=2/(5-y)

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Solution for 3/y=2/(5-y) equation: 


D( y )

y = 0

5-y = 0

y = 0

y = 0

5-y = 0

5-y = 0

5-y = 0 // - 5

-y = -5 // * -1

y = 5

y in (-oo:0) U (0:5) U (5:+oo)

3/y = 2/(5-y) // - 2/(5-y)

3/y-(2/(5-y)) = 0

3/y-2*(5-y)^-1 = 0

3/y-2/(5-y) = 0

(-2*y)/(y*(5-y))+(3*(5-y))/(y*(5-y)) = 0

3*(5-y)-2*y = 0

15-5*y = 0

(15-5*y)/(y*(5-y)) = 0

(15-5*y)/(y*(5-y)) = 0 // * y*(5-y)

15-5*y = 0

15-5*y = 0 // - 15

-5*y = -15 // : -5

y = -15/(-5)

y = 3

y = 3

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