If you cant find a common denominator for two numbers you multiply them together which in this case would be 72 then you just symplify.
24
8
36
18...i guess :P
180
63
LCD(8, 6) = 24
No. The least common denominator cannot be less than the largest denominator.
The LCD for 2/9 and 1/6 is 18.
The LCD of 3/4 and 7/9 is 36.
That's the least common denominator or LCD.
The least common denominator.