lcm of 12 and 81, lcm of 12 and 80, lcm of 12 and 84, lcm of 12 and 18, lcm of 12 and 16, lcm of 12 and 15, lcm of 12 and 10, lcm of 12 and 14, lcm of 12 and 11, lcm of 12 and 13, lcm of 12 and 15 and 18, lcm of 12 and 17, lcm of 12 and 19, lcm of 12 18 and 81, lcm of 12 30 and 81
lcm of 12 and 81. There are any references about lcm of 12 and 81 in here. you can look below.