45/3 divided by 21/5

45/3 ÷ 21/5
=
25 7
Mixed Number: 3 4/7
Decimal: 3.571429
Percentage: 357.14%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    21/5 becomes 5/21
  2. 2
    Multiply by reciprocal
    45/3 × 5/21
  3. 3
    Multiply numerators & denominators
    45 × 5 = 225    3 × 21 = 63
  4. 4
    Simplify
    225/63 = 25/7

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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