00:01
So to find the least common denominator, we're looking for the least common multiple.
00:07
So if i compare 10 and 30, right, i'm just going to create multiples of 10, 10, 20, 30, for 30, 30, 60, 90.
00:16
And what's the smallest multiple? well, they both share 30.
00:21
There's nothing less than 30 that they both share as a multiple.
00:25
So 30 will be the least common denominator.
00:29
For b, i'm looking at 8 and 12 now.
00:32
So i'm going to write multiples of 8 and then multiples of 12.
00:36
Multip multiples of 8.
00:37
8 times 1 is 8.
00:38
8 times 2 is 16.
00:40
8 times 3 is 24.
00:42
8 times 4 is 32 and so on and so forth.
00:46
For 12, i'm going to do 12 times 1 is 12, 24, 36, 12 times 4 is 48, and so on and so forth.
00:56
They both share 24, which is the smallest.
00:59
Of whatever multiples i'll get.
01:01
So 24 will be my least common denominator.
01:05
And then again, 9, 6, and 4.
01:07
So we have three different numbers that we're looking at, and we're going to write the multiples of each number and find the least common multiple among all of them...