What is the least common denominator of 2 5 and 9?

Answer 1

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.

Answer 2

Considering your question is asking about the numbers 2, 5 & 9 :

The denominators here do not share a common factor.

Multiply the denominators: 2×5×9 = 90.

Since 2, 5 and 9 are factors of 90 and neither is a factor of the other, 90 is the least common denominator (LCD).

Considering the numbers 25 & 9 :

Multiply the denominators: 25×9 = 225

Since 25 and 9 are factors of 225 and neither is a factor of the other, 225 is the LCD