Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 15/8 from 21/4

1st number: 5 1/4, 2nd number: 1 7/8

21/4 - 15/8 is 27/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 8 is 8
  2. For the 1st fraction, since 4 × 2 = 8,
    21/4 = 21 × 2/4 × 2 = 42/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    15/8 = 15 × 1/8 × 1 = 15/8
  4. Subtract the two fractions:
    42/8 - 15/8 = 42 - 15/8 = 27/8
  5. In mixed form: 33/8

Related:

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

© everydaycalculation.com