Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 18/10 from 70/80

1st number: 70/80, 2nd number: 1 8/10

70/80 - 18/10 is -37/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 10 is 80
  2. For the 1st fraction, since 80 × 1 = 80,
    70/80 = 70 × 1/80 × 1 = 70/80
  3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
    18/10 = 18 × 8/10 × 8 = 144/80
  4. Subtract the two fractions:
    70/80 - 144/80 = 70 - 144/80 = -74/80
  5. After reducing the fraction, the answer is -37/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com