Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/40 and 8/18

12/40 + 8/18 is 67/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 18 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 40 × 9 = 360,
    12/40 = 12 × 9/40 × 9 = 108/360
  3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
    8/18 = 8 × 20/18 × 20 = 160/360
  4. Add the two like fractions:
    108/360 + 160/360 = 108 + 160/360 = 268/360
  5. 268/360 simplified gives 67/90
  6. So, 12/40 + 8/18 = 67/90

MathStep (Works offline)

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

Related:

© everydaycalculation.com