Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/5 and 21/16

1st number: 2 2/5, 2nd number: 1 5/16

12/5 + 21/16 is 297/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 16 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 5 × 16 = 80,
    12/5 = 12 × 16/5 × 16 = 192/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    21/16 = 21 × 5/16 × 5 = 105/80
  4. Add the two like fractions:
    192/80 + 105/80 = 192 + 105/80 = 297/80
  5. So, 12/5 + 21/16 = 297/80
    In mixed form: 357/80

MathStep (Works offline)

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

Related:

© everydaycalculation.com