Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 18/9 from 24/42

1st number: 24/42, 2nd number: 2 0/9

24/42 - 18/9 is -10/7.

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,
    24/42 = 24 × 3/42 × 3 = 72/126
  3. Likewise, for the 2nd fraction, since 9 × 14 = 126,
    18/9 = 18 × 14/9 × 14 = 252/126
  4. Subtract the two fractions:
    72/126 - 252/126 = 72 - 252/126 = -180/126
  5. After reducing the fraction, the answer is -10/7

MathStep (Works offline)

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

Related:

© everydaycalculation.com