The LCD of the given three numbers is 8
56 is the lcd of 8 and 7. You can get this by multiplying 8x7. 8 and 7 have no common factors; that is why you multiply the two numbers to get the lcd.
If that's 84 and 35, the LCD is 420.If that's 8/4 and 3/5, the LCD is 20.
Assuming you mean the LCM (Least Common Denominator of 2 fractions is the LCM of the denominators, which for 7/1 and 16/1 is 1), the answer is 112.
The least common denominator is 24.
LCD(2, 8, 32) = 32.
The LCD of the given three numbers is 8
The answer is 8.
LCD(2,6,8,24) = 24
24
8.
8
40
2
24
LCD(8, 100) = 200
LCD(8, 3) = 24.