Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 72/35 from 15/20

1st number: 15/20, 2nd number: 2 2/35

15/20 - 72/35 is -183/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 35 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    15/20 = 15 × 7/20 × 7 = 105/140
  3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
    72/35 = 72 × 4/35 × 4 = 288/140
  4. Subtract the two fractions:
    105/140 - 288/140 = 105 - 288/140 = -183/140

MathStep (Works offline)

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

Related:

© everydaycalculation.com