Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 28/21 and 7/9

1st number: 1 7/21, 2nd number: 7/9

28/21 + 7/9 is 19/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 9 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    28/21 = 28 × 3/21 × 3 = 84/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    7/9 = 7 × 7/9 × 7 = 49/63
  4. Add the two fractions:
    84/63 + 49/63 = 84 + 49/63 = 133/63
  5. After reducing the fraction, the answer is 19/9
  6. In mixed form: 21/9

Related:

Use fraction calculator with our all-in-one calculator app: Download for Android, Download for iOS

© everydaycalculation.com