Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 8/54 from 81/30

1st number: 2 21/30, 2nd number: 8/54

81/30 - 8/54 is 689/270.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 54 is 270
  2. For the 1st fraction, since 30 × 9 = 270,
    81/30 = 81 × 9/30 × 9 = 729/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    8/54 = 8 × 5/54 × 5 = 40/270
  4. Subtract the two fractions:
    729/270 - 40/270 = 729 - 40/270 = 689/270
  5. In mixed form: 2149/270

MathStep (Works offline)

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

Related:

© everydaycalculation.com