40/y=-5

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Solution for 40/y=-5 equation: 


D( y )

y = 0

y = 0

y = 0

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

40/y = -5 // + 5

40/y+5 = 0

40*y^-1 = -5 // : 40

y^-1 = -1/8

-1 < 0

1/(y^1) = -1/8 // * y^1

1 = -1/8*y^1 // : -1/8

-8 = y^1

y = -8

y = -8

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