15/2 divided by 21/4

15/2 ÷ 21/4
=
10 7
Mixed Number: 1 3/7
Decimal: 1.428571
Percentage: 142.86%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    21/4 becomes 4/21
  2. 2
    Multiply by reciprocal
    15/2 × 4/21
  3. 3
    Multiply numerators & denominators
    15 × 4 = 60    2 × 21 = 42
  4. 4
    Simplify
    60/42 = 10/7

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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