Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/8 and 5/21

1st number: 5 0/8, 2nd number: 5/21

40/8 + 5/21 is 110/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    40/8 = 40 × 21/8 × 21 = 840/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    5/21 = 5 × 8/21 × 8 = 40/168
  4. Add the two like fractions:
    840/168 + 40/168 = 840 + 40/168 = 880/168
  5. 880/168 simplified gives 110/21
  6. So, 40/8 + 5/21 = 110/21
    In mixed form: 55/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com