Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/40 and 80/60

1st number: 21/40, 2nd number: 1 20/60

21/40 + 80/60 is 223/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 60 is 120
  2. For the 1st fraction, since 40 × 3 = 120,
    21/40 = 21 × 3/40 × 3 = 63/120
  3. Likewise, for the 2nd fraction, since 60 × 2 = 120,
    80/60 = 80 × 2/60 × 2 = 160/120
  4. Add the two fractions:
    63/120 + 160/120 = 63 + 160/120 = 223/120
  5. So, 21/40 + 80/60 = 223/120
    In mixed form: 1103/120

MathStep (Works offline)

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

Related:

© everydaycalculation.com