alleryA quick common denominator for two fractions is found by doing what to their denominators?
AAdding them
BMultiplying them
CSubtracting them
DDividing them
Answer & Solution
Correct answer: B. Multiplying them
1. For unlike fractions, pick a denominator both can convert to.
2. Simply multiply the two denominators together; it always works.
3. Adding, subtracting or dividing the denominators does not produce a common multiple.
_Source: Wikipedia, Fraction, section Adding unlike quantities_
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