Question: what is the least common denominator of 11 and 13?
Answer: What is the Least Common Denominator of 11 and 13? You need to know the least common denominator (LCD) of 11 and 13 if you want to add or subtract two fractions with 11 and 13 as denominators. The least common denominator, also called lowest common denominator (LCD), of 11 and 13 is 143.