Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/12 and 3/24

1st number: 1 9/12, 2nd number: 3/24

21/12 + 3/24 is 15/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 24 is 24

    Next, find the equivalent fraction of both fractional numbers with denominator 24
  2. For the 1st fraction, since 12 × 2 = 24,
    21/12 = 21 × 2/12 × 2 = 42/24
  3. Likewise, for the 2nd fraction, since 24 × 1 = 24,
    3/24 = 3 × 1/24 × 1 = 3/24
  4. Add the two like fractions:
    42/24 + 3/24 = 42 + 3/24 = 45/24
  5. 45/24 simplified gives 15/8
  6. So, 21/12 + 3/24 = 15/8
    In mixed form: 17/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com