Question

Lowest common multiple of 30 and 45

Answer 1

90, see below :)

Explanation:

Hello!

The best way to find LCM (lowest common multiple) is to first list the prime factorization. Then you multiply the ones that overlap once and then the different ones.

30: 2 * 3 * 5

45: 3 * 3 * 5

We can see 3 and 5 overlaps so we only multiply it once:

2 * 3

And then both times 3 and 5

6 * 5 * 3 = 90