Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 81/15 and 27/36

1st number: 5 6/15, 2nd number: 27/36

81/15 + 27/36 is 123/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 36 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 15 × 12 = 180,
    81/15 = 81 × 12/15 × 12 = 972/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    27/36 = 27 × 5/36 × 5 = 135/180
  4. Add the two like fractions:
    972/180 + 135/180 = 972 + 135/180 = 1107/180
  5. 1107/180 simplified gives 123/20
  6. So, 81/15 + 27/36 = 123/20
    In mixed form: 63/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com