18/3 divided by 21/4

18/3 ÷ 21/4
=
8 7
Mixed Number: 1 1/7
Decimal: 1.142857
Percentage: 114.29%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    21/4 becomes 4/21
  2. 2
    Multiply by reciprocal
    18/3 × 4/21
  3. 3
    Multiply numerators & denominators
    18 × 4 = 72    3 × 21 = 63
  4. 4
    Simplify
    72/63 = 8/7

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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