Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 20/15 and 12/63

1st number: 1 5/15, 2nd number: 12/63

20/15 + 12/63 is 32/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 63 is 315
  2. For the 1st fraction, since 15 × 21 = 315,
    20/15 = 20 × 21/15 × 21 = 420/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    12/63 = 12 × 5/63 × 5 = 60/315
  4. Add the two fractions:
    420/315 + 60/315 = 420 + 60/315 = 480/315
  5. After reducing the fraction, the answer is 32/21
  6. In mixed form: 111/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com