Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 24/7 from 8/21

1st number: 8/21, 2nd number: 3 3/7

8/21 - 24/7 is -64/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 7 is 21

    Next, find the equivalent fraction of both fractional numbers with denominator 21
  2. For the 1st fraction, since 21 × 1 = 21,
    8/21 = 8 × 1/21 × 1 = 8/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    24/7 = 24 × 3/7 × 3 = 72/21
  4. Subtract the two like fractions:
    8/21 - 72/21 = 8 - 72/21 = -64/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com