15/4 divided by 21/2

15/4 ÷ 21/2
=
5 14
Decimal: 0.357143
Percentage: 35.71%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    21/2 becomes 2/21
  2. 2
    Multiply by reciprocal
    15/4 × 2/21
  3. 3
    Multiply numerators & denominators
    15 × 2 = 30    4 × 21 = 84
  4. 4
    Simplify
    30/84 = 5/14

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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