Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 63/21 and 5/45

1st number: 3 0/21, 2nd number: 5/45

63/21 + 5/45 is 28/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 21 × 15 = 315,
    63/21 = 63 × 15/21 × 15 = 945/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    5/45 = 5 × 7/45 × 7 = 35/315
  4. Add the two like fractions:
    945/315 + 35/315 = 945 + 35/315 = 980/315
  5. 980/315 simplified gives 28/9
  6. So, 63/21 + 5/45 = 28/9
    In mixed form: 31/9

MathStep (Works offline)

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

Related:

© everydaycalculation.com