cross-multiply
cross-mul·ti·ply (krôsʹmŭlʹtə-plī', krŏsʹ-) intr.v. cross-mul·ti·plied, cross-mul·ti·ply·ing, cross-mul·ti·plies
To multiply the numerator of one of a pair of fractions by the denominator of the other.
  cross multiplication n.

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Universalium. 2010.

Look at other dictionaries:

  • cross multiply — cross′ mul′tiply v. i. math. to remove fractions from an equation by multiplying each side by the common multiple of the denominators of the fractions of the opposite side • Etymology: 1950–55 cross′ multiplica′tion, n …   From formal English to slang

  • cross multiply — cross multiplication. Math. to remove fractions from an equation by multiplying each side by the common multiple of the denominators of the fractions of the opposite side. [1950 55] * * * …   Universalium

  • cross multiply — intransitive verb Etymology: back formation from cross multiplication : to find the two products obtained by multiplying the numerator of each of two fractions by the denominator of the other * * * cross multiplication. Math. to remove fractions… …   Useful english dictionary

  • cross multiply — intransitive verb Date: 1951 to clear an equation of fractions when each side consists of a fraction with a single denominator by multiplying the numerator of each side by the denominator of the other side and equating the two products obtained • …   New Collegiate Dictionary

  • cross-multiply — verb To set the product of the extremes of a proportion equal to the product of its means. Cross multiplying yields …   Wiktionary

  • Cross-multiplication — In mathematics, specifically in elementary arithmetic and elementary algebra, given an equation between two fractions or rational expressions, one can cross multiply to simplify the equation or determine the value of a variable. For an equation… …   Wikipedia

  • cross multiplication — noun see cross multiply …   New Collegiate Dictionary

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