# cross-multiply

[kraws-muhl-ti-plahy, kros-]

- to remove fractions from an equation by multiplying each side by the common multiple of the denominators of the fractions of both sides.

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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

## cross-multiply

- To multiply the numerator of one of a pair of fractions by the denominator of the other.

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The American Heritage® Science Dictionary
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