00:02
So in this problem, let's start with part a.
00:05
We're given three and four, and we're looking for the least common denominator.
00:11
So if i skip count by three, is i have three, six, nine, twelve, fifteen, et cetera, et cetera, et cetera.
00:18
If i skip count by four, i get four, eight, twelve.
00:23
Notice i can stop right there because that is the first number that they have in common, which would be the least common denominator.
00:29
So the least common denominator for 3 and 4 is 12.
00:33
In part b, we've got 5 and 6.
00:37
So we're skip counting by fives.
00:39
5, 10, 15, 20, 25, 30...