Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 40/49 from 21/20

1st number: 1 1/20, 2nd number: 40/49

21/20 - 40/49 is 229/980.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 49 is 980
  2. For the 1st fraction, since 20 × 49 = 980,
    21/20 = 21 × 49/20 × 49 = 1029/980
  3. Likewise, for the 2nd fraction, since 49 × 20 = 980,
    40/49 = 40 × 20/49 × 20 = 800/980
  4. Subtract the two fractions:
    1029/980 - 800/980 = 1029 - 800/980 = 229/980

MathStep (Works offline)

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

Related:

© everydaycalculation.com