How to simplify 21/15?

Simplifying a fraction (reducing it to the lowest terms), such as 21/15, means expressing the same value more clearly and concisely.

Step-by-step simplification of 21/15

  1. Start with computing the GCD of 21 and 15: GCD(21, 15) = 3.
  2. Divide the numerator by the GCD: 21/3 = 7
  3. Divide the denominator by the GCD: 15/3 = 5
  4. Combine these results to form the new simplified fraction: 7/5

The final result is: 21 15 = 7 5