Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 40/7 from 21/2

1st number: 10 1/2, 2nd number: 5 5/7

21/2 - 40/7 is 67/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 7 is 14
  2. For the 1st fraction, since 2 × 7 = 14,
    21/2 = 21 × 7/2 × 7 = 147/14
  3. Likewise, for the 2nd fraction, since 7 × 2 = 14,
    40/7 = 40 × 2/7 × 2 = 80/14
  4. Subtract the two fractions:
    147/14 - 80/14 = 147 - 80/14 = 67/14
  5. In mixed form: 411/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com