Question

Find the LCM using the prime factorisation method with solve
1. 30,45,60
2. 25,50,70


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Answer 1

Answer:

We need find the least common multiple of 30, 45 and 60 with the method of prime factorization.

1. Now , you calculate the least common multiple.

LCM = 2 × 2 × 3 × 3 × 5.

LCM = 4 × 9 × 5.

LCM = 36 × 5.

LCM = 180.

Final result : the least common multiple of 30,45,60 is 180.

2. Now , you calculate the least common multiple.

LCM = 2 × 5 × 5 × 7

LCM= 10 × 35

LCM= 350

Final result :the least common multiple of 25, 50 and 70 is 350.