45/2 divided by 20/4

45/2 ÷ 20/4
=
9 2
Mixed Number: 4 1/2
Decimal: 4.5
Percentage: 450%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    20/4 becomes 4/20
  2. 2
    Multiply by reciprocal
    45/2 × 4/20
  3. 3
    Multiply numerators & denominators
    45 × 4 = 180    2 × 20 = 40
  4. 4
    Simplify
    180/40 = 9/2

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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