Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 12/15 and 28/84

12/15 + 28/84 is 17/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 84 is 420
  2. For the 1st fraction, since 15 × 28 = 420,
    12/15 = 12 × 28/15 × 28 = 336/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    28/84 = 28 × 5/84 × 5 = 140/420
  4. Add the two fractions:
    336/420 + 140/420 = 336 + 140/420 = 476/420
  5. After reducing the fraction, the answer is 17/15
  6. In mixed form: 12/15

MathStep (Works offline)

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

Related:

© everydaycalculation.com