Question

Please show me the working to Find the LCM of 63, 70 and 77 by prime factorization method

Answer 1

Answer:

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Step-by-step explanation:

LCM of 63,70 and 77 is 6930.

By prime factorization :-

63 = 3 × 21 = 3 × 3 × 7

70 = 2 × 35 = 2 × 5 × 7

77 = 7 × 11

LCM (63, 70, 77) = 3 × 3 × 2 × 5 × 7 × 11 = 6930

Answer 2

Step-by-step explanation:

Factors of 63 = 3*3*7

Factors of 70 = 2*5*7

Factors of 77 = 7*11

LCM = (Refer to image 2)

LCM= 3*3*7*5*2*11

= 9*7*5*2*11

= 63*5*2*11

= 315*2*11

= 630*11

= 6390

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