cross-multiplication
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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
cross multiplication — noun Etymology: cross (III) : the multiplying of a numerator of one fraction by the denominator of another (as in clearing an equation of fractions) … Useful english dictionary
cross-multiplication — … Useful english dictionary
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. * * * … Universalium
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
Multiplication — Multiply redirects here. For other uses, see Multiplication (disambiguation). For methods of computing products, including those of very large numbers, see Multiplication algorithm. Four bags of three marbles gives twelve marbles. There are also… … Wikipedia
Cross product — This article is about the cross product of two vectors in three dimensional Euclidean space. For other uses, see Cross product (disambiguation). In mathematics, the cross product, vector product, or Gibbs vector product is a binary operation on… … Wikipedia
