Question

what is the lcd of 13/36 11/30 and 11/60

Answer 1

Do you know what a prime number is? Do you know how to factor out a number into primes?

Answer 2

Uhm is it someething that only goes into it one time?

Answer 3

Yeah, a prime number something that you can't be factored into other whole numbers except itself and one.

Answer 4

You want to factor the numbers into primes first.

Answer 5

Here is an example for 36.

Answer 6

So, 36 = 2 * 2 * 3 * 3

Answer 7

Can you do this for 30 and 60?

Answer 8

so for 30 its 3*2*5
&
60 its 2*2*3*5
right?

Answer 9

Yeah, that's right

Answer 10

You want to find any time that all three of them have a common factor and cross it out like so.

Answer 11

got so then how would i get the answer cause it shows me
90
1080
30
180

Answer 12

Oops, I made a small mistake.

Answer 13

You have to find lcm for 2 numbers at a time.

Answer 14

So, lcm(36, 30) = 36 * 30 / (2*3) = 180

Answer 15

lcm(60, 180) = 180

Answer 16

so hows wouuld 19/24 29/30 13/60 be?