Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 42/21 and 14/15

1st number: 2 0/21, 2nd number: 14/15

42/21 + 14/15 is 44/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 15 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    42/21 = 42 × 5/21 × 5 = 210/105
  3. Likewise, for the 2nd fraction, since 15 × 7 = 105,
    14/15 = 14 × 7/15 × 7 = 98/105
  4. Add the two like fractions:
    210/105 + 98/105 = 210 + 98/105 = 308/105
  5. 308/105 simplified gives 44/15
  6. So, 42/21 + 14/15 = 44/15
    In mixed form: 214/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com