Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/54 and 8/20

21/54 + 8/20 is 71/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 54 × 10 = 540,
    21/54 = 21 × 10/54 × 10 = 210/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    8/20 = 8 × 27/20 × 27 = 216/540
  4. Add the two like fractions:
    210/540 + 216/540 = 210 + 216/540 = 426/540
  5. 426/540 simplified gives 71/90
  6. So, 21/54 + 8/20 = 71/90

MathStep (Works offline)

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

Related:

© everydaycalculation.com