Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 3/21 from 4/5

4/5 - 3/21 is 23/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 21 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 5 × 21 = 105,
    4/5 = 4 × 21/5 × 21 = 84/105
  3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
    3/21 = 3 × 5/21 × 5 = 15/105
  4. Subtract the two like fractions:
    84/105 - 15/105 = 84 - 15/105 = 69/105
  5. After reducing the fraction, the answer is 23/35

MathStep (Works offline)

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

Related:

© everydaycalculation.com