Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 1/15 and 21/7

1st number: 1/15, 2nd number: 3 0/7

1/15 + 21/7 is 46/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 7 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    1/15 = 1 × 7/15 × 7 = 7/105
  3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
    21/7 = 21 × 15/7 × 15 = 315/105
  4. Add the two like fractions:
    7/105 + 315/105 = 7 + 315/105 = 322/105
  5. 322/105 simplified gives 46/15
  6. So, 1/15 + 21/7 = 46/15
    In mixed form: 31/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com