30/3 divided by 21/4

30/3 ÷ 21/4
=
40 21
Mixed Number: 1 19/21
Decimal: 1.904762
Percentage: 190.48%

Step-by-Step Solution

  1. 1
    Take reciprocal of second fraction
    21/4 becomes 4/21
  2. 2
    Multiply by reciprocal
    30/3 × 4/21
  3. 3
    Multiply numerators & denominators
    30 × 4 = 120    3 × 21 = 63
  4. 4
    Simplify
    120/63 = 40/21

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.

Try Another Calculation