Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/3 and 5/21

1st number: 2 1/3, 2nd number: 5/21

7/3 + 5/21 is 18/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 21 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 3 × 7 = 21,
    7/3 = 7 × 7/3 × 7 = 49/21
  3. Likewise, for the 2nd fraction, since 21 × 1 = 21,
    5/21 = 5 × 1/21 × 1 = 5/21
  4. Add the two like fractions:
    49/21 + 5/21 = 49 + 5/21 = 54/21
  5. 54/21 simplified gives 18/7
  6. So, 7/3 + 5/21 = 18/7
    In mixed form: 24/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com