Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 63/45 and 5/21

1st number: 1 18/45, 2nd number: 5/21

63/45 + 5/21 is 172/105.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 45 × 7 = 315,
    63/45 = 63 × 7/45 × 7 = 441/315
  3. Likewise, for the 2nd fraction, since 21 × 15 = 315,
    5/21 = 5 × 15/21 × 15 = 75/315
  4. Add the two like fractions:
    441/315 + 75/315 = 441 + 75/315 = 516/315
  5. 516/315 simplified gives 172/105
  6. So, 63/45 + 5/21 = 172/105
    In mixed form: 167/105

MathStep (Works offline)

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

Related:

© everydaycalculation.com