alleryWhich fraction is already in lowest terms?
A6/9
B10/15
C7/12
D14/21
Answer & Solution
Correct answer: C. 7/12
1. A fraction is in lowest terms if its parts share no factor above 1.
2. 7 and 12 share only 1, so 7/12 is irreducible.
3. 6/9 reduces by 3, 10/15 by 5 and 14/21 by 7.
_Source: Wikipedia, Fraction, section Simplifying (reducing) fractions_
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