Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 9/21 from 18/4

1st number: 4 2/4, 2nd number: 9/21

18/4 - 9/21 is 57/14.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84
  2. For the 1st fraction, since 4 × 21 = 84,
    18/4 = 18 × 21/4 × 21 = 378/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    9/21 = 9 × 4/21 × 4 = 36/84
  4. Subtract the two fractions:
    378/84 - 36/84 = 378 - 36/84 = 342/84
  5. After reducing the fraction, the answer is 57/14
  6. In mixed form: 41/14

Related:

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

© everydaycalculation.com