30
The LCD of 13, 14 and 15 is 2730 The LCD of 1/3, 1/4 and 1/5 is 60
To find the least common denominator (LCD) of the fractions 14/15 and 11/12, first identify the denominators: 15 and 12. The prime factorization of 15 is 3 × 5, and for 12, it is 2^2 × 3. The LCD is found by taking the highest power of each prime factor: 2^2 (from 12), 3 (from both), and 5 (from 15). Thus, the LCD is 2^2 × 3 × 5 = 60.
84
84
15.
LCD(5, 14) = 70
The LCD for 1/5 and 4/15 is 15.
As 14 and 5 have no common factor other than 1, lcd of 14 and 5 is 14 × 5 = 70.
The LCD of x, 5, 7, 15 is 105x.
14/15 + 3/5 = 14/15 + 9/15 = 23/1514/15 + 3/5 = 14/15 + 9/15 = 23/1514/15 + 3/5 = 14/15 + 9/15 = 23/1514/15 + 3/5 = 14/15 + 9/15 = 23/15
5/7 ÷ 14/15 = 75/98
It is: 7/15 times 5/14 = 1/6