2/5=18/x+3

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Solution for 2/5=18/x+3 equation: 


D( x )

x = 0

x = 0

x = 0

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

2/5 = 18/x+3 // - 18/x+3

2/5-(18/x)-3 = 0

2/5-18*x^-1-3 = 0

-18*x^-1 = 13/5 // : -18

x^-1 = -13/90

-1 < 0

1/(x^1) = -13/90 // * x^1

1 = -13/90*x^1 // : -13/90

-90/13 = x^1

x = -90/13

x = -90/13

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