Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 4/20 from 10/84

10/84 - 4/20 is -17/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 20 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    10/84 = 10 × 5/84 × 5 = 50/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    4/20 = 4 × 21/20 × 21 = 84/420
  4. Subtract the two fractions:
    50/420 - 84/420 = 50 - 84/420 = -34/420
  5. After reducing the fraction, the answer is -17/210

MathStep (Works offline)

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

Related:

© everydaycalculation.com