Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 12/49 from 4/21

4/21 - 12/49 is -8/147.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 49 is 147

    Next, find the equivalent fraction of both fractional numbers with denominator 147
  2. For the 1st fraction, since 21 × 7 = 147,
    4/21 = 4 × 7/21 × 7 = 28/147
  3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
    12/49 = 12 × 3/49 × 3 = 36/147
  4. Subtract the two like fractions:
    28/147 - 36/147 = 28 - 36/147 = -8/147

MathStep (Works offline)

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

Related:

© everydaycalculation.com