Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 36/80 and 20/81

36/80 + 20/81 is 1129/1620.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 81 is 6480

    Next, find the equivalent fraction of both fractional numbers with denominator 6480
  2. For the 1st fraction, since 80 × 81 = 6480,
    36/80 = 36 × 81/80 × 81 = 2916/6480
  3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
    20/81 = 20 × 80/81 × 80 = 1600/6480
  4. Add the two like fractions:
    2916/6480 + 1600/6480 = 2916 + 1600/6480 = 4516/6480
  5. 4516/6480 simplified gives 1129/1620
  6. So, 36/80 + 20/81 = 1129/1620

MathStep (Works offline)

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

Related:

© everydaycalculation.com