Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 54/8 from 5/21

1st number: 5/21, 2nd number: 6 6/8

5/21 - 54/8 is -547/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 21 × 8 = 168,
    5/21 = 5 × 8/21 × 8 = 40/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    54/8 = 54 × 21/8 × 21 = 1134/168
  4. Subtract the two like fractions:
    40/168 - 1134/168 = 40 - 1134/168 = -1094/168
  5. After reducing the fraction, the answer is -547/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com