Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 12/8 and 63/21

1st number: 1 4/8, 2nd number: 3 0/21

12/8 + 63/21 is 9/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 21 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    12/8 = 12 × 21/8 × 21 = 252/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    63/21 = 63 × 8/21 × 8 = 504/168
  4. Add the two like fractions:
    252/168 + 504/168 = 252 + 504/168 = 756/168
  5. 756/168 simplified gives 9/2
  6. So, 12/8 + 63/21 = 9/2
    In mixed form: 41/2

MathStep (Works offline)

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

Related:

© everydaycalculation.com