9/5=140/x

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Solution for 9/5=140/x equation: 


D( x )

x = 0

x = 0

x = 0

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

9/5 = 140/x // - 140/x

9/5-(140/x) = 0

9/5-140*x^-1 = 0

-140*x^-1 = -9/5 // : -140

x^-1 = 9/700

-1 < 0

1/(x^1) = 9/700 // * x^1

1 = 9/700*x^1 // : 9/700

700/9 = x^1

x = 700/9

x = 700/9

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