Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 80/7 from 40/18

1st number: 2 4/18, 2nd number: 11 3/7

40/18 - 80/7 is -580/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 7 is 126
  2. For the 1st fraction, since 18 × 7 = 126,
    40/18 = 40 × 7/18 × 7 = 280/126
  3. Likewise, for the 2nd fraction, since 7 × 18 = 126,
    80/7 = 80 × 18/7 × 18 = 1440/126
  4. Subtract the two fractions:
    280/126 - 1440/126 = 280 - 1440/126 = -1160/126
  5. After reducing the fraction, the answer is -580/63

MathStep (Works offline)

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

Related:

© everydaycalculation.com