How do you find the LCD between 20c, 12c^2?
1 Answer
Jul 6, 2016
LCD is
Explanation:
The LCD must be divisible by both
One way to find the LCD (especially of only 2 numbers) is to consider the multiples of the larger of the two (20). Look for the first of the multiples which is divisible by the smaller number (12).
20, 40, 60, 80 ...... We should know that 60 is also a multiple of 12.
60 is therefore the LCD of 20 and 12.
LCD is
This can also be done by writing each term as the product of its prime factors. However this method is longer and is better for 3 or 4 numbers.
LCD =