Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/2 and 24/15

1st number: 10 1/2, 2nd number: 1 9/15

21/2 + 24/15 is 121/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 15 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 2 × 15 = 30,
    21/2 = 21 × 15/2 × 15 = 315/30
  3. Likewise, for the 2nd fraction, since 15 × 2 = 30,
    24/15 = 24 × 2/15 × 2 = 48/30
  4. Add the two like fractions:
    315/30 + 48/30 = 315 + 48/30 = 363/30
  5. 363/30 simplified gives 121/10
  6. So, 21/2 + 24/15 = 121/10
    In mixed form: 121/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com