Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 42/8 and 15/12

1st number: 5 2/8, 2nd number: 1 3/12

42/8 + 15/12 is 13/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 12 is 24

    Next, find the equivalent fraction of both fractional numbers with denominator 24
  2. For the 1st fraction, since 8 × 3 = 24,
    42/8 = 42 × 3/8 × 3 = 126/24
  3. Likewise, for the 2nd fraction, since 12 × 2 = 24,
    15/12 = 15 × 2/12 × 2 = 30/24
  4. Add the two like fractions:
    126/24 + 30/24 = 126 + 30/24 = 156/24
  5. 156/24 simplified gives 13/2
  6. So, 42/8 + 15/12 = 13/2
    In mixed form: 61/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com