Question

Find least common multiple (LCM) of
20 and 30 by division method.
Explain step by step​

Answer 1

Answer:

60

Step-by-step explanation:

20=2x2x5

30=2x3x5

take 1 of each prime factor

ie from the prime factors of 20 we take a 2 and  5

from the prime factors of 30 we take 2, 3 and 5 because each of them only appear once for 30.

Now we multiply all of these together

we are left with 2x2x3x5=4x15=60

Answer 2

Answer:

by lcm method ans is 30 and by division method ans is 2.