115/28=120/x

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Solution for 115/28=120/x equation: 


D( x )

x = 0

x = 0

x = 0

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

115/28 = 120/x // - 120/x

115/28-(120/x) = 0

115/28-120*x^-1 = 0

-120*x^-1 = -115/28 // : -120

x^-1 = 23/672

-1 < 0

1/(x^1) = 23/672 // * x^1

1 = 23/672*x^1 // : 23/672

672/23 = x^1

x = 672/23

x = 672/23

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