Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/12 and 6/42

1st number: 1 3/12, 2nd number: 6/42

15/12 + 6/42 is 39/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 42 is 84
  2. For the 1st fraction, since 12 × 7 = 84,
    15/12 = 15 × 7/12 × 7 = 105/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    6/42 = 6 × 2/42 × 2 = 12/84
  4. Add the two fractions:
    105/84 + 12/84 = 105 + 12/84 = 117/84
  5. 117/84 simplified gives 39/28
  6. So, 15/12 + 6/42 = 39/28
    In mixed form: 111/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com