Question

find the lcm of 7 and 8.

Explanation:

Step1: Check if 7 and 8 are coprime.

7 is a prime number, and 8 = 2×2×2. The only common factor of 7 and 8 is 1, so they are coprime.

Step2: Use the formula for LCM of coprime numbers.

For two coprime numbers \(a\) and \(b\), the LCM(\(a, b\)) = \(a\times b\). So LCM(7, 8) = \(7\times8 = 56\).

Answer:

56