Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 10/50 from 21/84

21/84 - 10/50 is 1/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 50 is 2100

    Next, find the equivalent fraction of both fractional numbers with denominator 2100
  2. For the 1st fraction, since 84 × 25 = 2100,
    21/84 = 21 × 25/84 × 25 = 525/2100
  3. Likewise, for the 2nd fraction, since 50 × 42 = 2100,
    10/50 = 10 × 42/50 × 42 = 420/2100
  4. Subtract the two like fractions:
    525/2100 - 420/2100 = 525 - 420/2100 = 105/2100
  5. After reducing the fraction, the answer is 1/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com