Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 9/21 and 54/12

1st number: 9/21, 2nd number: 4 6/12

9/21 + 54/12 is 69/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    9/21 = 9 × 4/21 × 4 = 36/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    54/12 = 54 × 7/12 × 7 = 378/84
  4. Add the two like fractions:
    36/84 + 378/84 = 36 + 378/84 = 414/84
  5. 414/84 simplified gives 69/14
  6. So, 9/21 + 54/12 = 69/14
    In mixed form: 413/14

MathStep (Works offline)

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

Related:

© everydaycalculation.com