Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 7/63 from 18/21

18/21 - 7/63 is 47/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 63 is 63
  2. For the 1st fraction, since 21 × 3 = 63,
    18/21 = 18 × 3/21 × 3 = 54/63
  3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
    7/63 = 7 × 1/63 × 1 = 7/63
  4. Subtract the two fractions:
    54/63 - 7/63 = 54 - 7/63 = 47/63

Related:

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

© everydaycalculation.com