Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 3/5 from 15/21

15/21 - 3/5 is 4/35.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    15/21 = 15 × 5/21 × 5 = 75/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    3/5 = 3 × 21/5 × 21 = 63/105
  4. Subtract the two like fractions:
    75/105 - 63/105 = 75 - 63/105 = 12/105
  5. After reducing the fraction, the answer is 4/35

MathStep (Works offline)

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

Related:

© everydaycalculation.com