Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 3/9 from 21/75

21/75 - 3/9 is -4/75.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 9 is 225
  2. For the 1st fraction, since 75 × 3 = 225,
    21/75 = 21 × 3/75 × 3 = 63/225
  3. Likewise, for the 2nd fraction, since 9 × 25 = 225,
    3/9 = 3 × 25/9 × 25 = 75/225
  4. Subtract the two fractions:
    63/225 - 75/225 = 63 - 75/225 = -12/225
  5. After reducing the fraction, the answer is -4/75

MathStep (Works offline)

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

Related:

© everydaycalculation.com