Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/28 and 20/24

21/28 + 20/24 is 19/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 24 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 28 × 6 = 168,
    21/28 = 21 × 6/28 × 6 = 126/168
  3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
    20/24 = 20 × 7/24 × 7 = 140/168
  4. Add the two like fractions:
    126/168 + 140/168 = 126 + 140/168 = 266/168
  5. 266/168 simplified gives 19/12
  6. So, 21/28 + 20/24 = 19/12
    In mixed form: 17/12

MathStep (Works offline)

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

Related:

© everydaycalculation.com