Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 81/20 and 15/9

1st number: 4 1/20, 2nd number: 1 6/9

81/20 + 15/9 is 343/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    81/20 = 81 × 9/20 × 9 = 729/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    15/9 = 15 × 20/9 × 20 = 300/180
  4. Add the two like fractions:
    729/180 + 300/180 = 729 + 300/180 = 1029/180
  5. 1029/180 simplified gives 343/60
  6. So, 81/20 + 15/9 = 343/60
    In mixed form: 543/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com