. Find the greatest common factor and the least common multiple of each of the following sets of numbers. 12 and 7

Mathematics

2 answers:

Nana76 [90]3 years ago

5 0

Answer:

LCM = 84 GCF = 1

Step-by-step explanation:

LCM of 7 and 12 is 84.

GCF(7,12) = 1

LCM(7,12) = ( 7 × 12) / 1

LCM(7,12) = 84 / 1

LCM(7,12) = 84

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).

GCF of 7 and 12 is 1. Now calculate the prime factors of 7 and 12, then find the greatest common factor (greatest common divisor) of the numbers.

To find the GCF of two numbers: List the prime factors of each number. Multiply those factors both numbers have in common. If there are no common prime factors, the GCF is 1.

Levart [38]3 years ago

3 0

Answer:

HCF: 1

LCM: 84

Step-by-step explanation:

7 is a prime number. Nothing but 1 and 7 divide into which means that twelve and 7 have no highest common factor but 1.

The lowest common multiply (because 12 and 7 are prime to each other ) is 12 * 7 = 84

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LiRa [457]

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