Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 28/80 from 49/21

1st number: 2 7/21, 2nd number: 28/80

49/21 - 28/80 is 119/60.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    49/21 = 49 × 80/21 × 80 = 3920/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    28/80 = 28 × 21/80 × 21 = 588/1680
  4. Subtract the two like fractions:
    3920/1680 - 588/1680 = 3920 - 588/1680 = 3332/1680
  5. After reducing the fraction, the answer is 119/60
  6. In mixed form: 159/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com