Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 63/28 and 21/30

1st number: 2 7/28, 2nd number: 21/30

63/28 + 21/30 is 59/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 30 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 28 × 15 = 420,
    63/28 = 63 × 15/28 × 15 = 945/420
  3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
    21/30 = 21 × 14/30 × 14 = 294/420
  4. Add the two like fractions:
    945/420 + 294/420 = 945 + 294/420 = 1239/420
  5. 1239/420 simplified gives 59/20
  6. So, 63/28 + 21/30 = 59/20
    In mixed form: 219/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com