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What is the least common denominator you could use to subtract 1/3 and 1/4 ?

a. 3
b. 4
c.24
d. 12

User Thisiate
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2 Answers

2 votes

Answer: d. 12

Explanation:

User Friederbluemle
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1 vote

Answer:

Option D, 12

Explanation:

The least common denominator (LCD) is the lowest multiple that two or more denominators share.

To find the LCD, list multiples of each denominator.

For denominator 3, these multiples are: 3, 6, 9, 12, 15, 18, 21, 24,...

For denominator 4, these multiples are 4, 8, 12, 16, 20, 24, 28, 32,...

The lowest multiple the two denominators share is 12. They also share 24 as a multiple, however, it is not the lowest shared number in each set. Therefore, the least common denominator (LCD) for this question is option D, 12.

User Geekdenz
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