Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 2/28 from 4/21

4/21 - 2/28 is 5/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    4/21 = 4 × 4/21 × 4 = 16/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    2/28 = 2 × 3/28 × 3 = 6/84
  4. Subtract the two like fractions:
    16/84 - 6/84 = 16 - 6/84 = 10/84
  5. After reducing the fraction, the answer is 5/42

MathStep (Works offline)

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

Related:

© everydaycalculation.com