20/15=100/x

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Solution for 20/15=100/x equation: 


D( x )

x = 0

x = 0

x = 0

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

20/15 = 100/x // - 100/x

20/15-(100/x) = 0

20/15-100*x^-1 = 0

-100*x^-1 = -4/3 // : -100

x^-1 = 1/75

-1 < 0

1/(x^1) = 1/75 // * x^1

1 = 1/75*x^1 // : 1/75

75 = x^1

x = 75

x = 75

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