Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 81/60 and 18/9

1st number: 1 21/60, 2nd number: 2 0/9

81/60 + 18/9 is 67/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 9 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 60 × 3 = 180,
    81/60 = 81 × 3/60 × 3 = 243/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    18/9 = 18 × 20/9 × 20 = 360/180
  4. Add the two like fractions:
    243/180 + 360/180 = 243 + 360/180 = 603/180
  5. 603/180 simplified gives 67/20
  6. So, 81/60 + 18/9 = 67/20
    In mixed form: 37/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com