Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 8/21 from 24/18

1st number: 1 6/18, 2nd number: 8/21

24/18 - 8/21 is 20/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 21 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    24/18 = 24 × 7/18 × 7 = 168/126
  3. Likewise, for the 2nd fraction, since 21 × 6 = 126,
    8/21 = 8 × 6/21 × 6 = 48/126
  4. Subtract the two like fractions:
    168/126 - 48/126 = 168 - 48/126 = 120/126
  5. After reducing the fraction, the answer is 20/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com