Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 28/10 from 21/5

1st number: 4 1/5, 2nd number: 2 8/10

21/5 - 28/10 is 7/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 10 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 5 × 2 = 10,
    21/5 = 21 × 2/5 × 2 = 42/10
  3. Likewise, for the 2nd fraction, since 10 × 1 = 10,
    28/10 = 28 × 1/10 × 1 = 28/10
  4. Subtract the two like fractions:
    42/10 - 28/10 = 42 - 28/10 = 14/10
  5. After reducing the fraction, the answer is 7/5
  6. In mixed form: 12/5

MathStep (Works offline)

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

Related:

© everydaycalculation.com