9/12=20/X

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Solution for 9/12=20/X equation: 


D( X )

X = 0

X = 0

X = 0

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

9/12 = 20/X // - 20/X

9/12-(20/X) = 0

9/12-20*X^-1 = 0

-20*X^-1 = -3/4 // : -20

X^-1 = 3/80

-1 < 0

1/(X^1) = 3/80 // * X^1

1 = 3/80*X^1 // : 3/80

80/3 = X^1

X = 80/3

X = 80/3

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