Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 25/8 from 21/4

1st number: 5 1/4, 2nd number: 3 1/8

21/4 - 25/8 is 17/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 8 is 8

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    25/8 = 25 × 1/8 × 1 = 25/8
  4. Subtract the two like fractions:
    42/8 - 25/8 = 42 - 25/8 = 17/8
  5. In mixed form: 21/8

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com