Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 28/20 from 15/2

1st number: 7 1/2, 2nd number: 1 8/20

15/2 - 28/20 is 61/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 20 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 2 × 10 = 20,
    15/2 = 15 × 10/2 × 10 = 150/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    28/20 = 28 × 1/20 × 1 = 28/20
  4. Subtract the two like fractions:
    150/20 - 28/20 = 150 - 28/20 = 122/20
  5. After reducing the fraction, the answer is 61/10
  6. In mixed form: 61/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com