Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 1/81 from 1/15

1/15 - 1/81 is 22/405.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 81 is 405

    Next, find the equivalent fraction of both fractional numbers with denominator 405
  2. For the 1st fraction, since 15 × 27 = 405,
    1/15 = 1 × 27/15 × 27 = 27/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    1/81 = 1 × 5/81 × 5 = 5/405
  4. Subtract the two like fractions:
    27/405 - 5/405 = 27 - 5/405 = 22/405

MathStep (Works offline)

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

Related:

© everydaycalculation.com