Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 30/81 from 8/9

8/9 - 30/81 is 14/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 81 is 81

    Next, find the equivalent fraction of both fractional numbers with denominator 81
  2. For the 1st fraction, since 9 × 9 = 81,
    8/9 = 8 × 9/9 × 9 = 72/81
  3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
    30/81 = 30 × 1/81 × 1 = 30/81
  4. Subtract the two like fractions:
    72/81 - 30/81 = 72 - 30/81 = 42/81
  5. After reducing the fraction, the answer is 14/27

MathStep (Works offline)

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

Related:

© everydaycalculation.com