75/x=90/1200

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Solution for 75/x=90/1200 equation: 


D( x )

x = 0

x = 0

x = 0

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

75/x = 90/1200 // - 90/1200

75/x-(90/1200) = 0

75/x-3/40 = 0

75*x^-1 = 3/40 // : 75

x^-1 = 1/1000

-1 < 0

1/(x^1) = 1/1000 // * x^1

1 = 1/1000*x^1 // : 1/1000

1000 = x^1

x = 1000

x = 1000

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