Answer:
USING PRIME FACTORIZATION METHOD
the LCM of 5 and 7 is 35
5 = 5
7 = 7
LCM (5 and 7)
= 5 × 7
= 35
the LCM of 6 and 9 is 18
6 = 2 × 3
9 = 3 × 3
LCM(6 and 9)
= 2 × 3 × 3
= 18
the LCM of 8 and 20
8 = 2 × 2 × 2
20 = 2 × 2 × 5
LCM(8 and 20) is 40
= 2 × 2 × 2 × 5
= 40
the LCM of 30 and 40 is 120
30 = 2 × 3 × 5
40 = 2 × 2 × 2 × 5
LCM(30 and 40)
= 2 × 2 × 2 × 3 × 5
= 120
the LCM of 24 and 36 is 72
24 = 2 × 2 × 2 × 3
36 = 2 × 2 × 3 × 3
LCM(24 and 36)
= 2 × 2 × 2 × 3 × 3
= 72
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