16/4 divided by 21/5

16/4 ÷ 21/5
=
20 21
Decimal: 0.952381
Percentage: 95.24%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    21/5 becomes 5/21
  2. 2
    Multiply by reciprocal
    16/4 × 5/21
  3. 3
    Multiply numerators & denominators
    16 × 5 = 80    4 × 21 = 84
  4. 4
    Simplify
    80/84 = 20/21

How to Divide Fractions

To divide fractions, use "Keep, Change, Flip": keep the first fraction unchanged, change the ÷ to ×, then flip the second fraction. Multiply and simplify.

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