Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 40/7 from 20/3

1st number: 6 2/3, 2nd number: 5 5/7

20/3 - 40/7 is 20/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 7 is 21
  2. For the 1st fraction, since 3 × 7 = 21,
    20/3 = 20 × 7/3 × 7 = 140/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    40/7 = 40 × 3/7 × 3 = 120/21
  4. Subtract the two fractions:
    140/21 - 120/21 = 140 - 120/21 = 20/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com