alleryThe greatest common divisor of 63 and 462 is 21. What is 63/462 in lowest terms?
A9/66
B7/22
C1/22
D3/22
Answer & Solution
Correct answer: D. 3/22
1. Divide both parts by 21.
2. 63 / 21 = 3 and 462 / 21 = 22, giving 3/22.
3. 7/22 and 1/22 use wrong quotients, and 9/66 is a smaller reduction by 7 that is still reducible.
_Source: Wikipedia, Fraction, section Simplifying (reducing) fractions_
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