Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 9/21 from 2/27

2/27 - 9/21 is -67/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 21 is 189

    Next, find the equivalent fraction of both fractional numbers with denominator 189
  2. For the 1st fraction, since 27 × 7 = 189,
    2/27 = 2 × 7/27 × 7 = 14/189
  3. Likewise, for the 2nd fraction, since 21 × 9 = 189,
    9/21 = 9 × 9/21 × 9 = 81/189
  4. Subtract the two like fractions:
    14/189 - 81/189 = 14 - 81/189 = -67/189

MathStep (Works offline)

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

Related:

© everydaycalculation.com