9. The least common multiple (lcm) of two positive integers u and v is the smallest positive integer that is evenly divisible by both u and v. Thus, the Icm of 15 and 10, written Icm (15, 10), is 30 because 30 is the smallest integer divisible by both 15 and 10. Write a function lem() that takes two integer arguments and returns their function should calculate the least common multiple by calling the ged) function from Program 7.6 in accordance with the following identity: lcm (u, v) uv /gcd (u, v) lcm. The 1cm()