Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/12 and 2/21

1st number: 6 0/12, 2nd number: 2/21

72/12 + 2/21 is 128/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    72/12 = 72 × 7/12 × 7 = 504/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    2/21 = 2 × 4/21 × 4 = 8/84
  4. Add the two fractions:
    504/84 + 8/84 = 504 + 8/84 = 512/84
  5. 512/84 simplified gives 128/21
  6. So, 72/12 + 2/21 = 128/21
    In mixed form: 62/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com