1/x+2/x=15

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Solution for 1/x+2/x=15 equation: 


D( x )

x = 0

x = 0

x = 0

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

1/x+2/x = 15 // - 15

1/x+2/x-15 = 0

3*x^-1 = 15 // : 3

x^-1 = 5

-1 < 0

1/(x^1) = 5 // * x^1

1 = 5*x^1 // : 5

1/5 = x^1

x = 1/5

x = 1/5

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