There is none because the Least Common Denominator (or LCD) refers to the Least Common Multiple (LCM) of the denominators of two or more fractions or mixed numbers. Even if you converted your whole numbers (x) to their fraction equivalents (x/1), the LCD would always be 1.
It is: 40
The least common denominator (LCD) is 40.
160
40
40
40
It is: 40
The least common denominator (LCD) is 40.
40
120
200
360
360
120
160
40
It is 80