Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 9/7 from 2/81

1st number: 2/81, 2nd number: 1 2/7

2/81 - 9/7 is -715/567.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 7 is 567

    Next, find the equivalent fraction of both fractional numbers with denominator 567
  2. For the 1st fraction, since 81 × 7 = 567,
    2/81 = 2 × 7/81 × 7 = 14/567
  3. Likewise, for the 2nd fraction, since 7 × 81 = 567,
    9/7 = 9 × 81/7 × 81 = 729/567
  4. Subtract the two like fractions:
    14/567 - 729/567 = 14 - 729/567 = -715/567

MathStep (Works offline)

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

Related:

© everydaycalculation.com