Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 60/21 from 15/20

1st number: 15/20, 2nd number: 2 18/21

15/20 - 60/21 is -59/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 21 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    15/20 = 15 × 21/20 × 21 = 315/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    60/21 = 60 × 20/21 × 20 = 1200/420
  4. Subtract the two like fractions:
    315/420 - 1200/420 = 315 - 1200/420 = -885/420
  5. After reducing the fraction, the answer is -59/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com