Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 81/35 from 9/20

1st number: 9/20, 2nd number: 2 11/35

9/20 - 81/35 is -261/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 35 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    9/20 = 9 × 7/20 × 7 = 63/140
  3. Likewise, for the 2nd fraction, since 35 × 4 = 140,
    81/35 = 81 × 4/35 × 4 = 324/140
  4. Subtract the two like fractions:
    63/140 - 324/140 = 63 - 324/140 = -261/140

MathStep (Works offline)

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

Related:

© everydaycalculation.com