lcm of 12 and 15 — step-by-step solution

To calculate the LCM (least common multiple), we first decompose the numbers into prime factors.

12

2^{2} \times 3

15

3 \times 5

We keep every prime factor that appears, with its greatest exponent.

▶

ppcm (12, 15)

2^{2} \times 3 \times 5

60