Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 9/7 from 8/20

1st number: 8/20, 2nd number: 1 2/7

8/20 - 9/7 is -31/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    8/20 = 8 × 7/20 × 7 = 56/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    9/7 = 9 × 20/7 × 20 = 180/140
  4. Subtract the two fractions:
    56/140 - 180/140 = 56 - 180/140 = -124/140
  5. After reducing the fraction, the answer is -31/35

Related:

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

© everydaycalculation.com