Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 20/50 from 42/80

42/80 - 20/50 is 1/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 50 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 80 × 5 = 400,
    42/80 = 42 × 5/80 × 5 = 210/400
  3. Likewise, for the 2nd fraction, since 50 × 8 = 400,
    20/50 = 20 × 8/50 × 8 = 160/400
  4. Subtract the two like fractions:
    210/400 - 160/400 = 210 - 160/400 = 50/400
  5. After reducing the fraction, the answer is 1/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com