Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/40 and 1/81

18/40 + 1/81 is 749/1620.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 81 is 3240

    Next, find the equivalent fraction of both fractional numbers with denominator 3240
  2. For the 1st fraction, since 40 × 81 = 3240,
    18/40 = 18 × 81/40 × 81 = 1458/3240
  3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
    1/81 = 1 × 40/81 × 40 = 40/3240
  4. Add the two like fractions:
    1458/3240 + 40/3240 = 1458 + 40/3240 = 1498/3240
  5. 1498/3240 simplified gives 749/1620
  6. So, 18/40 + 1/81 = 749/1620

MathStep (Works offline)

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

Related:

© everydaycalculation.com