40/100=50/x

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Solution for 40/100=50/x equation: 


D( x )

x = 0

x = 0

x = 0

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

40/100 = 50/x // - 50/x

40/100-(50/x) = 0

40/100-50*x^-1 = 0

-50*x^-1 = -2/5 // : -50

x^-1 = 1/125

-1 < 0

1/(x^1) = 1/125 // * x^1

1 = 1/125*x^1 // : 1/125

125 = x^1

x = 125

x = 125

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