Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/81 and 2/20

21/81 + 2/20 is 97/270.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 20 is 1620

    Next, find the equivalent fraction of both fractional numbers with denominator 1620
  2. For the 1st fraction, since 81 × 20 = 1620,
    21/81 = 21 × 20/81 × 20 = 420/1620
  3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
    2/20 = 2 × 81/20 × 81 = 162/1620
  4. Add the two like fractions:
    420/1620 + 162/1620 = 420 + 162/1620 = 582/1620
  5. 582/1620 simplified gives 97/270
  6. So, 21/81 + 2/20 = 97/270

MathStep (Works offline)

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

Related:

© everydaycalculation.com