4/y+5/y-1/y=13

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Solution for 4/y+5/y-1/y=13 equation: 


D( y )

y = 0

y = 0

y = 0

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

4/y+5/y-(1/y) = 13 // - 13

4/y+5/y-(1/y)-13 = 0

4/y+5/y-y^-1-13 = 0

8*y^-1 = 13 // : 8

y^-1 = 13/8

-1 < 0

1/(y^1) = 13/8 // * y^1

1 = 13/8*y^1 // : 13/8

8/13 = y^1

y = 8/13

y = 8/13

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