Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/21 and 20/5

1st number: 1 19/21, 2nd number: 4 0/5

40/21 + 20/5 is 124/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 5 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    40/21 = 40 × 5/21 × 5 = 200/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    20/5 = 20 × 21/5 × 21 = 420/105
  4. Add the two like fractions:
    200/105 + 420/105 = 200 + 420/105 = 620/105
  5. 620/105 simplified gives 124/21
  6. So, 40/21 + 20/5 = 124/21
    In mixed form: 519/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com