Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 70/21 and 1/5

1st number: 3 7/21, 2nd number: 1/5

70/21 + 1/5 is 53/15.

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,
    70/21 = 70 × 5/21 × 5 = 350/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    1/5 = 1 × 21/5 × 21 = 21/105
  4. Add the two like fractions:
    350/105 + 21/105 = 350 + 21/105 = 371/105
  5. 371/105 simplified gives 53/15
  6. So, 70/21 + 1/5 = 53/15
    In mixed form: 38/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com