9/8=20/x

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Solution for 9/8=20/x equation: 


D( x )

x = 0

x = 0

x = 0

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

9/8 = 20/x // - 20/x

9/8-(20/x) = 0

9/8-20*x^-1 = 0

-20*x^-1 = -9/8 // : -20

x^-1 = 9/160

-1 < 0

1/(x^1) = 9/160 // * x^1

1 = 9/160*x^1 // : 9/160

160/9 = x^1

x = 160/9

x = 160/9

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