Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 5/8 from 21/12

1st number: 1 9/12, 2nd number: 5/8

21/12 - 5/8 is 9/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 8 is 24

    Next, find the equivalent fraction of both fractional numbers with denominator 24
  2. For the 1st fraction, since 12 × 2 = 24,
    21/12 = 21 × 2/12 × 2 = 42/24
  3. Likewise, for the 2nd fraction, since 8 × 3 = 24,
    5/8 = 5 × 3/8 × 3 = 15/24
  4. Subtract the two like fractions:
    42/24 - 15/24 = 42 - 15/24 = 27/24
  5. After reducing the fraction, the answer is 9/8
  6. In mixed form: 11/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com