Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/21 and 15/60

12/21 + 15/60 is 23/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 60 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    12/21 = 12 × 20/21 × 20 = 240/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    15/60 = 15 × 7/60 × 7 = 105/420
  4. Add the two like fractions:
    240/420 + 105/420 = 240 + 105/420 = 345/420
  5. 345/420 simplified gives 23/28
  6. So, 12/21 + 15/60 = 23/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com