700
LCD(7, 9, 2) = 126.
14
It is: 42
70
70
LCD(40, 50) = 200
7 and 100 only have the common factor of 1, so the LCM or LCD (least common denominator) for fractions having 7 & 100 for denominators is 7*100 = 700.
The LCD for 2 and 7 is 14
560
63
To find the least common denominator (LCD) of the numbers 98, 36, and 42, we first determine their prime factorizations: 98 = 2 × 7^2 36 = 2^2 × 3^2 42 = 2 × 3 × 7 The LCD is obtained by taking the highest power of each prime number present in the factorizations. This gives us: LCD = 2^2 × 3^2 × 7^2 = 4 × 9 × 49 = 1764. Thus, the LCD of 98, 36, and 42 is 1764.
LCD(8, 100) = 200