Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 72/21 and 35/9

1st number: 3 9/21, 2nd number: 3 8/9

72/21 + 35/9 is 461/63.

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,
    72/21 = 72 × 3/21 × 3 = 216/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    35/9 = 35 × 7/9 × 7 = 245/63
  4. Add the two fractions:
    216/63 + 245/63 = 216 + 245/63 = 461/63
  5. In mixed form: 720/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com