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cross-multiply

[kraws-muhl-ti-plahy, kros-] /ˈkrɔsˈmʌl tɪˌplaɪ, ˈkrɒs-/
verb (used without object), cross-multiplied, cross-multiplying. Mathematics
1.
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
1950-1955
1950-55
Related forms
cross-multiplication [kraws-muhl-ti-pli-key-shuh n, kros-] /ˈkrɔsˌmʌl tɪ plɪˌkeɪ ʃən, ˈkrɒs-/ (Show IPA), cross multiplication, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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cross-multiply in Science
cross-multiply  
To multiply the numerator of one of a pair of fractions by the denominator of the other.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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