Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 16/9 from 21/28

1st number: 21/28, 2nd number: 1 7/9

21/28 - 16/9 is -37/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 9 is 252
  2. For the 1st fraction, since 28 × 9 = 252,
    21/28 = 21 × 9/28 × 9 = 189/252
  3. Likewise, for the 2nd fraction, since 9 × 28 = 252,
    16/9 = 16 × 28/9 × 28 = 448/252
  4. Subtract the two fractions:
    189/252 - 448/252 = 189 - 448/252 = -259/252
  5. After reducing the fraction, the answer is -37/36

MathStep (Works offline)

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

Related:

© everydaycalculation.com