Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 10/18 from 8/42

8/42 - 10/18 is -23/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 18 is 126
  2. For the 1st fraction, since 42 × 3 = 126,
    8/42 = 8 × 3/42 × 3 = 24/126
  3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
    10/18 = 10 × 7/18 × 7 = 70/126
  4. Subtract the two fractions:
    24/126 - 70/126 = 24 - 70/126 = -46/126
  5. After reducing the fraction, the answer is -23/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com