Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 20/21 and 20/9

1st number: 20/21, 2nd number: 2 2/9

20/21 + 20/9 is 200/63.

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,
    20/21 = 20 × 3/21 × 3 = 60/63
  3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
    20/9 = 20 × 7/9 × 7 = 140/63
  4. Add the two fractions:
    60/63 + 140/63 = 60 + 140/63 = 200/63
  5. In mixed form: 311/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com