Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 81/7 from 27/8

1st number: 3 3/8, 2nd number: 11 4/7

27/8 - 81/7 is -459/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 7 is 56

    Next, find the equivalent fraction of both fractional numbers with denominator 56
  2. For the 1st fraction, since 8 × 7 = 56,
    27/8 = 27 × 7/8 × 7 = 189/56
  3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
    81/7 = 81 × 8/7 × 8 = 648/56
  4. Subtract the two like fractions:
    189/56 - 648/56 = 189 - 648/56 = -459/56

MathStep (Works offline)

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

Related:

© everydaycalculation.com