Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 5/81 from 2/5

2/5 - 5/81 is 137/405.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 81 is 405

    Next, find the equivalent fraction of both fractional numbers with denominator 405
  2. For the 1st fraction, since 5 × 81 = 405,
    2/5 = 2 × 81/5 × 81 = 162/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    5/81 = 5 × 5/81 × 5 = 25/405
  4. Subtract the two like fractions:
    162/405 - 25/405 = 162 - 25/405 = 137/405

MathStep (Works offline)

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

Related:

© everydaycalculation.com