Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 20/21 and 6/12

20/21 + 6/12 is 61/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 12 is 84
  2. For the 1st fraction, since 21 × 4 = 84,
    20/21 = 20 × 4/21 × 4 = 80/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    6/12 = 6 × 7/12 × 7 = 42/84
  4. Add the two fractions:
    80/84 + 42/84 = 80 + 42/84 = 122/84
  5. After reducing the fraction, the answer is 61/42
  6. In mixed form: 119/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com