50/90=20/X

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Solution for 50/90=20/X equation: 


D( X )

X = 0

X = 0

X = 0

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

50/90 = 20/X // - 20/X

50/90-(20/X) = 0

50/90-20*X^-1 = 0

-20*X^-1 = -5/9 // : -20

X^-1 = 1/36

-1 < 0

1/(X^1) = 1/36 // * X^1

1 = 1/36*X^1 // : 1/36

36 = X^1

X = 36

X = 36

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