Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/4 and 63/21

1st number: 5 1/4, 2nd number: 3 0/21

21/4 + 63/21 is 33/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 21 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    21/4 = 21 × 21/4 × 21 = 441/84
  3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
    63/21 = 63 × 4/21 × 4 = 252/84
  4. Add the two like fractions:
    441/84 + 252/84 = 441 + 252/84 = 693/84
  5. 693/84 simplified gives 33/4
  6. So, 21/4 + 63/21 = 33/4
    In mixed form: 81/4

MathStep (Works offline)

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

Related:

© everydaycalculation.com