2/120=9/x

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Solution for 2/120=9/x equation: 


D( x )

x = 0

x = 0

x = 0

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

2/120 = 9/x // - 9/x

2/120-(9/x) = 0

2/120-9*x^-1 = 0

-9*x^-1 = -1/60 // : -9

x^-1 = 1/540

-1 < 0

1/(x^1) = 1/540 // * x^1

1 = 1/540*x^1 // : 1/540

540 = x^1

x = 540

x = 540

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