Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 10/15 and 21/20

1st number: 10/15, 2nd number: 1 1/20

10/15 + 21/20 is 103/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 20 is 60
  2. For the 1st fraction, since 15 × 4 = 60,
    10/15 = 10 × 4/15 × 4 = 40/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    21/20 = 21 × 3/20 × 3 = 63/60
  4. Add the two fractions:
    40/60 + 63/60 = 40 + 63/60 = 103/60
  5. In mixed form: 143/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com