Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 28/20 and 70/7

1st number: 1 8/20, 2nd number: 10 0/7

28/20 + 70/7 is 57/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    28/20 = 28 × 7/20 × 7 = 196/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    70/7 = 70 × 20/7 × 20 = 1400/140
  4. Add the two like fractions:
    196/140 + 1400/140 = 196 + 1400/140 = 1596/140
  5. 1596/140 simplified gives 57/5
  6. So, 28/20 + 70/7 = 57/5
    In mixed form: 112/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com