Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 42/9 and 81/20

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

42/9 + 81/20 is 523/60.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    42/9 = 42 × 20/9 × 20 = 840/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    81/20 = 81 × 9/20 × 9 = 729/180
  4. Add the two like fractions:
    840/180 + 729/180 = 840 + 729/180 = 1569/180
  5. 1569/180 simplified gives 523/60
  6. So, 42/9 + 81/20 = 523/60
    In mixed form: 843/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com