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English definition of “complex fraction”

complex fraction

noun [C]  /ˈkɑm·pleks ˈfræk·ʃən/
mathematics a fraction (= division of a number) in which either the numerator (= number above the line) or the denominator (= number below the line) is itself a fraction
(Definition of complex fraction noun from the Cambridge Academic Content Dictionary © Cambridge University Press)

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