We need to find the LCM of 4 and 7 greater than 80 and less than 100 and it should be an even number

Multiple of 7, greater than 80 and less than 100 = 84, 91, 98

Multiples of 4 greater than 80 and less than 100 = 84, 88, 92, 96

Even number, greater than 80 and less than 100, and is common multiple of 4 and 7 = 84