Answer for LCD of fractions 5/6 and 3/8: 24
Explanation:
5/6 and 3/8 - Get the multiples of 6: 6, 12, 18, 24, Multiples of 8: 8, 16, 24, 32.
The LEAST common one you can find is 24.
Answer for LCD of fractions 1/2 and 3/5: 10, or C
This one is a bit easier - just find multiples of 5 that are even. The least one is 10.
Answer for LCD of fractions 1/12 and 3/4: 12, or B
Explanation: Multiples of 12 that are multiples of 4 but the least of them: 12.