Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 30/81 from 4/30

4/30 - 30/81 is -32/135.

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,
    4/30 = 4 × 27/30 × 27 = 108/810
  3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
    30/81 = 30 × 10/81 × 10 = 300/810
  4. Subtract the two fractions:
    108/810 - 300/810 = 108 - 300/810 = -192/810
  5. After reducing the fraction, the answer is -32/135

MathStep (Works offline)

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

Related:

© everydaycalculation.com