Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 12/45 from 4/20

4/20 - 12/45 is -1/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 45 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    4/20 = 4 × 9/20 × 9 = 36/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    12/45 = 12 × 4/45 × 4 = 48/180
  4. Subtract the two fractions:
    36/180 - 48/180 = 36 - 48/180 = -12/180
  5. After reducing the fraction, the answer is -1/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com