(15-7*0.4)/y=3.05

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Solution for (15-7*0.4)/y=3.05 equation: 


D( y )

y = 0

y = 0

y = 0

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

(15-(0.4*7))/y = 3.05 // - 3.05

(15-(0.4*7))/y-3.05 = 0

(15-2.8)/y-3.05 = 0

12.2*y^-1 = 3.05 // : 12.2

y^-1 = 0.25

-1 < 0

1/(y^1) = 0.25 // * y^1

1 = 0.25*y^1 // : 0.25

4 = y^1

y = 4

y = 4

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