Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 12/21 and 27/12

1st number: 12/21, 2nd number: 2 3/12

12/21 + 27/12 is 79/28.

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,
    12/21 = 12 × 4/21 × 4 = 48/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    27/12 = 27 × 7/12 × 7 = 189/84
  4. Add the two fractions:
    48/84 + 189/84 = 48 + 189/84 = 237/84
  5. After reducing the fraction, the answer is 79/28
  6. In mixed form: 223/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com