Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/8 and 21/12

1st number: 5 0/8, 2nd number: 1 9/12

40/8 + 21/12 is 27/4.

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,
    40/8 = 40 × 3/8 × 3 = 120/24
  3. Likewise, for the 2nd fraction, since 12 × 2 = 24,
    21/12 = 21 × 2/12 × 2 = 42/24
  4. Add the two like fractions:
    120/24 + 42/24 = 120 + 42/24 = 162/24
  5. 162/24 simplified gives 27/4
  6. So, 40/8 + 21/12 = 27/4
    In mixed form: 63/4

MathStep (Works offline)

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

Related:

© everydaycalculation.com