15/25=7.5/y

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Solution for 15/25=7.5/y equation: 


D( y )

y = 0

y = 0

y = 0

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

15/25 = 7.5/y // - 7.5/y

15/25-(7.5/y) = 0

15/25-7.5*y^-1 = 0

-7.5*y^-1 = -3/5 // : -7.5

y^-1 = 0.08

-1 < 0

1/(y^1) = 0.08 // * y^1

1 = 0.08*y^1 // : 0.08

12.5 = y^1

y = 12.5

y = 12.5

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