Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 8/81 from 90/30

1st number: 3 0/30, 2nd number: 8/81

90/30 - 8/81 is 235/81.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 81 is 810
  2. For the 1st fraction, since 30 × 27 = 810,
    90/30 = 90 × 27/30 × 27 = 2430/810
  3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
    8/81 = 8 × 10/81 × 10 = 80/810
  4. Subtract the two fractions:
    2430/810 - 80/810 = 2430 - 80/810 = 2350/810
  5. After reducing the fraction, the answer is 235/81
  6. In mixed form: 273/81

MathStep (Works offline)

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

Related:

© everydaycalculation.com