Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 20/15 and 16/9

1st number: 1 5/15, 2nd number: 1 7/9

20/15 + 16/9 is 28/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 9 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 15 × 3 = 45,
    20/15 = 20 × 3/15 × 3 = 60/45
  3. Likewise, for the 2nd fraction, since 9 × 5 = 45,
    16/9 = 16 × 5/9 × 5 = 80/45
  4. Add the two like fractions:
    60/45 + 80/45 = 60 + 80/45 = 140/45
  5. 140/45 simplified gives 28/9
  6. So, 20/15 + 16/9 = 28/9
    In mixed form: 31/9

MathStep (Works offline)

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

Related:

© everydaycalculation.com