Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 15/42 from 63/21

1st number: 3 0/21, 2nd number: 15/42

63/21 - 15/42 is 37/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 42 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    63/21 = 63 × 2/21 × 2 = 126/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    15/42 = 15 × 1/42 × 1 = 15/42
  4. Subtract the two like fractions:
    126/42 - 15/42 = 126 - 15/42 = 111/42
  5. After reducing the fraction, the answer is 37/14
  6. In mixed form: 29/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com