Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 45/4 from 5/21

1st number: 5/21, 2nd number: 11 1/4

5/21 - 45/4 is -925/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 4 is 84
  2. For the 1st fraction, since 21 × 4 = 84,
    5/21 = 5 × 4/21 × 4 = 20/84
  3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
    45/4 = 45 × 21/4 × 21 = 945/84
  4. Subtract the two fractions:
    20/84 - 945/84 = 20 - 945/84 = -925/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com