Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/14 and 70/20

1st number: 1 7/14, 2nd number: 3 10/20

21/14 + 70/20 is 5/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 14 × 10 = 140,
    21/14 = 21 × 10/14 × 10 = 210/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    70/20 = 70 × 7/20 × 7 = 490/140
  4. Add the two like fractions:
    210/140 + 490/140 = 210 + 490/140 = 700/140
  5. 700/140 simplified gives 5/1
  6. So, 21/14 + 70/20 = 5/1

MathStep (Works offline)

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

Related:

© everydaycalculation.com