Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 20/40 from 70/80

70/80 - 20/40 is 3/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 40 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 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 40 × 2 = 80,
    20/40 = 20 × 2/40 × 2 = 40/80
  4. Subtract the two like fractions:
    70/80 - 40/80 = 70 - 40/80 = 30/80
  5. After reducing the fraction, the answer is 3/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com