Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 9/7 from 1/3

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

1/3 - 9/7 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,
    1/3 = 1 × 7/3 × 7 = 7/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    9/7 = 9 × 3/7 × 3 = 27/21
  4. Subtract the two fractions:
    7/21 - 27/21 = 7 - 27/21 = -20/21

Related:

Use fraction calculator with our all-in-one calculator app: Download for Android, Download for iOS

© everydaycalculation.com