Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 27/84 from 63/42

1st number: 1 21/42, 2nd number: 27/84

63/42 - 27/84 is 33/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 84 is 84
  2. For the 1st fraction, since 42 × 2 = 84,
    63/42 = 63 × 2/42 × 2 = 126/84
  3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
    27/84 = 27 × 1/84 × 1 = 27/84
  4. Subtract the two fractions:
    126/84 - 27/84 = 126 - 27/84 = 99/84
  5. After reducing the fraction, the answer is 33/28
  6. In mixed form: 15/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com