Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/28 and 3/5

18/28 + 3/5 is 87/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 5 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    18/28 = 18 × 5/28 × 5 = 90/140
  3. Likewise, for the 2nd fraction, since 5 × 28 = 140,
    3/5 = 3 × 28/5 × 28 = 84/140
  4. Add the two like fractions:
    90/140 + 84/140 = 90 + 84/140 = 174/140
  5. 174/140 simplified gives 87/70
  6. So, 18/28 + 3/5 = 87/70
    In mixed form: 117/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com