Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 28/63 from 2/21

2/21 - 28/63 is -22/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 63 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 21 × 3 = 63,
    2/21 = 2 × 3/21 × 3 = 6/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    28/63 = 28 × 1/63 × 1 = 28/63
  4. Subtract the two like fractions:
    6/63 - 28/63 = 6 - 28/63 = -22/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com