Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/5 and 2/21

1st number: 4 1/5, 2nd number: 2/21

21/5 + 2/21 is 451/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 21 is 105
  2. For the 1st fraction, since 5 × 21 = 105,
    21/5 = 21 × 21/5 × 21 = 441/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    2/21 = 2 × 5/21 × 5 = 10/105
  4. Add the two fractions:
    441/105 + 10/105 = 441 + 10/105 = 451/105
  5. So, 21/5 + 2/21 = 451/105
    In mixed form: 431/105

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com