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Cross-multiplying is when you have two fractions, and you multiply the numerator of each fraction by the other fractions's denominator. In other words, if you have two fractions a/b and c/d, cross-multiplying would be finding a*d and b*c.

If a/b=c/d, then ad = bc.

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โˆ™ 2011-11-24 22:45:38
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Q: What does cross multiplyng mean?
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