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Q: What is the LCD for 2 3 7?

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42

The lcd of 2/3 and 7/12 is 12

lcd(21, 14, 26) = 546. 21 = 3 x 7 14 = 2 x 7 26 = 2 x 13 lcd = 2 x 3 x 7 x 13 = 546

LCD(7, 9, 2) = 126.

1 All of these numbers are primes. * * * * * That is the HCF or GCF. The LCD is 42

It is 3 because 7 is a prime number and 6 can be divided into 3 by 2:)

LCD(2, 3) = 6.

LCD(7, 8, 2) = 56.

420

24

21

21

14

lcd(35, 60) = 420. 35 = 5 x 7 60 = 2^2 x 3 x 5 lcd = 2^2 x 3 x 5 x 7 = 420

LCD(3, 5, 4, 2) = 60

63

It is 42

It is: 63

168

231

84

168

It is: 63

Example: 1/30 and 1/42Factor them.2 x 3 x 5 = 302 x 3 x 7 = 42Combine the factors, eliminating duplicates.2 x 3 x 5 x 7 = 210, the LCD

Example: 1/30 and 1/42Factor them.2 x 3 x 5 = 302 x 3 x 7 = 42Combine the factors, eliminating duplicates.2 x 3 x 5 x 7 = 210, the LCD