- to remove fractions from an equation by multiplying each side by the common multiple of the denominators of the fractions of both sides.
Also cross multiply.
Origin of cross-multiply
First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- To multiply the numerator of one of a pair of fractions by the denominator of the other.
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