Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 21/27 from 12/75

12/75 - 21/27 is -139/225.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 27 is 675
  2. For the 1st fraction, since 75 × 9 = 675,
    12/75 = 12 × 9/75 × 9 = 108/675
  3. Likewise, for the 2nd fraction, since 27 × 25 = 675,
    21/27 = 21 × 25/27 × 25 = 525/675
  4. Subtract the two fractions:
    108/675 - 525/675 = 108 - 525/675 = -417/675
  5. After reducing the fraction, the answer is -139/225

MathStep (Works offline)

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

Related:

© everydaycalculation.com