Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 10/81 and 30/80

10/81 + 30/80 is 323/648.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 6480
  2. For the 1st fraction, since 81 × 80 = 6480,
    10/81 = 10 × 80/81 × 80 = 800/6480
  3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
    30/80 = 30 × 81/80 × 81 = 2430/6480
  4. Add the two like fractions:
    800/6480 + 2430/6480 = 800 + 2430/6480 = 3230/6480
  5. 3230/6480 simplified gives 323/648
  6. So, 10/81 + 30/80 = 323/648

MathStep (Works offline)

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

Related:

© everydaycalculation.com