00:01
So in this problem, it says to complete the equations so that the two fractions have the least common denominator.
00:07
Okay, so part a says what is the top fraction equal to? or, yeah, so part a says what is the top fraction equal? okay, well, if we're talking about common denominators, that means that both of our denominators have to equal the same thing.
00:21
So what we have to find is our least common multiple, meaning what is the smallest number that, in this case, both 3 and 5 divide into? to? well, if we think of our multiples of 3, 3, 6, 9, 12, 15, 18, those would be some of our multiples of 3, and that pattern would continue.
00:38
And then we want our multiples of 5.
00:40
So that would be 5, 10, 15, 20, 25, etc.
00:45
So their least common multiple in this case is going to be 15.
00:48
It's the smallest number on both of their lists.
00:51
So now if i want to rewrite part a with the least common common denominator, so what i would do is i would put the denominator as 15...