39/x+78/15

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Solution for 39/x+78/15 equation: 


D( x )

x = 0

x = 0

x = 0

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

39/x+78/15 = 0

39*x^-1 = -26/5 // : 39

x^-1 = -2/15

-1 < 0

1/(x^1) = -2/15 // * x^1

1 = -2/15*x^1 // : -2/15

-15/2 = x^1

x = -15/2

x = -15/2

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