Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 28/21 and 27/60

1st number: 1 7/21, 2nd number: 27/60

28/21 + 27/60 is 107/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 60 is 420
  2. For the 1st fraction, since 21 × 20 = 420,
    28/21 = 28 × 20/21 × 20 = 560/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    27/60 = 27 × 7/60 × 7 = 189/420
  4. Add the two fractions:
    560/420 + 189/420 = 560 + 189/420 = 749/420
  5. 749/420 simplified gives 107/60
  6. So, 28/21 + 27/60 = 107/60
    In mixed form: 147/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com