Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 1/21 from 5/12

5/12 - 1/21 is 31/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 12 × 7 = 84,
    5/12 = 5 × 7/12 × 7 = 35/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    1/21 = 1 × 4/21 × 4 = 4/84
  4. Subtract the two like fractions:
    35/84 - 4/84 = 35 - 4/84 = 31/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com