Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 5/20 from 21/84

21/84 - 5/20 is 0/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 20 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    21/84 = 21 × 5/84 × 5 = 105/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    5/20 = 5 × 21/20 × 21 = 105/420
  4. Subtract the two fractions:
    105/420 - 105/420 = 105 - 105/420 = 0/420
  5. The answer is 0

MathStep (Works offline)

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

Related:

© everydaycalculation.com