How to simplify 21/42?

Simplifying a fraction (reducing it to the lowest terms), such as 21/42, means expressing the same value more clearly and concisely.

Step-by-step simplification of 21/42

  1. Start with computing the GCD of 21 and 42: GCD(21, 42) = 21.
  2. Divide the numerator by the GCD: 21/21 = 1
  3. Divide the denominator by the GCD: 42/21 = 2
  4. Combine these results to form the new simplified fraction: 1/2

The final result is: 21 42 = 1 2