What is the lcm of 18 and 30 using prime factorization?

Question

asked Dec 6, 2019 167k views

1 Answer

Dccollie · Answer 1 · 2019-12-10T16:27:43+0000

18 = 2×3×3

30 = 2×3×5

The LCM will have factors of 2, 3², and 5. (Choose the highest power of each prime.)

2×3×3×5 = 90 is the LCM of 18 and 30.