The difference between two natural numbers is 14, their greatest common divisor is 14, and their least common multiple is 84. What are the two numbers? List the formulas

The difference between two natural numbers is 14, their greatest common divisor is 14, and their least common multiple is 84. What are the two numbers? List the formulas

Let two numbers be 14m and 14N respectively, m and N are coprime
If 14 * (M + n) = 84, M + n = 6
And 14m-14n = 14, M-N = 1
So, M = 3, n = 2, these two numbers are 42 and 28