Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 15/20 and 8/7

1st number: 15/20, 2nd number: 1 1/7

15/20 + 8/7 is 53/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    15/20 = 15 × 7/20 × 7 = 105/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    8/7 = 8 × 20/7 × 20 = 160/140
  4. Add the two like fractions:
    105/140 + 160/140 = 105 + 160/140 = 265/140
  5. 265/140 simplified gives 53/28
  6. So, 15/20 + 8/7 = 53/28
    In mixed form: 125/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com