Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 28/9 from 25/42

1st number: 25/42, 2nd number: 3 1/9

25/42 - 28/9 is -317/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 9 is 126
  2. For the 1st fraction, since 42 × 3 = 126,
    25/42 = 25 × 3/42 × 3 = 75/126
  3. Likewise, for the 2nd fraction, since 9 × 14 = 126,
    28/9 = 28 × 14/9 × 14 = 392/126
  4. Subtract the two fractions:
    75/126 - 392/126 = 75 - 392/126 = -317/126

MathStep (Works offline)

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

Related:

© everydaycalculation.com