Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 8/9 from 81/20

1st number: 4 1/20, 2nd number: 8/9

81/20 - 8/9 is 569/180.

Steps for subtracting 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,
    8/9 = 8 × 20/9 × 20 = 160/180
  4. Subtract the two like fractions:
    729/180 - 160/180 = 729 - 160/180 = 569/180
  5. In mixed form: 329/180

MathStep (Works offline)

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

Related:

© everydaycalculation.com