What is the LCD of 7 8 9?
To find the lcd of any set of numbers, you must find the lowest
number which all of the numbers in the set can divide evenly into.
For example, to find the lcd of 7,8, and 9, you must first see if
there are any numbers that can divide by 2 of the three numbers in
the set. An example of such a number is 56.
56/7 = 8
56/8 = 7
Once you have a number like this, the final step is to multiply
that number by the other number in the set that does not divide
into it (in this case, 9)
56x9 = 504
So, the lcd of 7, 8, and 9 is 504.