What does 21 - 1/3 equal?

21 - 1/3

Convert 21 into an improper fraction

21/1 - 1/3

Multiply until both fractions have the same common denominator

63/3 - 1/3

Subtract the numerators but NOT the denominators

Final Answer: 62/3 or 20 2/3 * Both answers are equivalent to each other.

21 - 1/3 = 20 2/3

To solve this, you must first know 3/3 = 1. Therefore, you must subtract 1 from 21 to get 21, but add back in the 2/3 that is left over.