It is not possible to give a sensible answer to this question. The least common denominator (LCD) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question!
It is 76
38 is.
133
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions.
19
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of two or more fractions.
lcd(8, 19) = 152.
It is: 1330
133
It is: 95
19 is prime, so multiply 19 by 112.
LCD(17, 19) = 323