35LCM of 5 and 7 is the smallest number among all common multiples of 5 and 7. which are 5, 10, 15, 20, 25, 30, (35) etc and 7, 14, 21, 28, (35) etc respectively
The first step is to list the prime factors of each number.
Then multiply each factor the greatest number of times it occurs in either number.If the same factor occurs more than once in both numbers, multiply the factor the greatest number of times it occurs.
7 = 1 × 7
5 = 1 × 5
1 : one occurrence
7 : one occurrence
5 : one occurrence
Then 1 × 7 × 5 = 35
The lowest common multiple ( LCM ) of 7 and 5 is 35
