Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 9/8 from 28/84

1st number: 28/84, 2nd number: 1 1/8

28/84 - 9/8 is -19/24.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 8 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 84 × 2 = 168,
    28/84 = 28 × 2/84 × 2 = 56/168
  3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
    9/8 = 9 × 21/8 × 21 = 189/168
  4. Subtract the two like fractions:
    56/168 - 189/168 = 56 - 189/168 = -133/168
  5. After reducing the fraction, the answer is -19/24

MathStep (Works offline)

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

Related:

© everydaycalculation.com