Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 3/8 from 2/42

2/42 - 3/8 is -55/168.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 42 × 4 = 168,
    2/42 = 2 × 4/42 × 4 = 8/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    3/8 = 3 × 21/8 × 21 = 63/168
  4. Subtract the two like fractions:
    8/168 - 63/168 = 8 - 63/168 = -55/168

MathStep (Works offline)

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

Related:

© everydaycalculation.com