Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 5/21 and 8/9

5/21 + 8/9 is 71/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 9 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 21 × 3 = 63,
    5/21 = 5 × 3/21 × 3 = 15/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    8/9 = 8 × 7/9 × 7 = 56/63
  4. Add the two like fractions:
    15/63 + 56/63 = 15 + 56/63 = 71/63
  5. So, 5/21 + 8/9 = 71/63
    In mixed form: 18/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com