Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 8/5 and 21/56

1st number: 1 3/5, 2nd number: 21/56

8/5 + 21/56 is 79/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 56 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 5 × 56 = 280,
    8/5 = 8 × 56/5 × 56 = 448/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    21/56 = 21 × 5/56 × 5 = 105/280
  4. Add the two like fractions:
    448/280 + 105/280 = 448 + 105/280 = 553/280
  5. 553/280 simplified gives 79/40
  6. So, 8/5 + 21/56 = 79/40
    In mixed form: 139/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com