lcm of 9 and 10 — step-by-step solution

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

9

3^{2}

10

2 \times 5

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

▶

ppcm (9, 10)

3^{2} \times 2 \times 5

90