21/5 divided by 15/3

21/5 ÷ 15/3
=
21 25
Decimal: 0.84
Percentage: 84%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    15/3 becomes 3/15
  2. 2
    Multiply by reciprocal
    21/5 × 3/15
  3. 3
    Multiply numerators & denominators
    21 × 3 = 63    5 × 15 = 75
  4. 4
    Simplify
    63/75 = 21/25

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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