Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 80/20 and 21/49

1st number: 4 0/20, 2nd number: 21/49

80/20 + 21/49 is 31/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 49 is 980

    Next, find the equivalent fraction of both fractional numbers with denominator 980
  2. For the 1st fraction, since 20 × 49 = 980,
    80/20 = 80 × 49/20 × 49 = 3920/980
  3. Likewise, for the 2nd fraction, since 49 × 20 = 980,
    21/49 = 21 × 20/49 × 20 = 420/980
  4. Add the two like fractions:
    3920/980 + 420/980 = 3920 + 420/980 = 4340/980
  5. 4340/980 simplified gives 31/7
  6. So, 80/20 + 21/49 = 31/7
    In mixed form: 43/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com