Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 80/28 from 10/21

1st number: 10/21, 2nd number: 2 24/28

10/21 - 80/28 is -50/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    10/21 = 10 × 4/21 × 4 = 40/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    80/28 = 80 × 3/28 × 3 = 240/84
  4. Subtract the two like fractions:
    40/84 - 240/84 = 40 - 240/84 = -200/84
  5. After reducing the fraction, the answer is -50/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com