Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 3/21 and 4/45

3/21 + 4/45 is 73/315.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315
  2. For the 1st fraction, since 21 × 15 = 315,
    3/21 = 3 × 15/21 × 15 = 45/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    4/45 = 4 × 7/45 × 7 = 28/315
  4. Add the two fractions:
    45/315 + 28/315 = 45 + 28/315 = 73/315

MathStep (Works offline)

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

Related:

© everydaycalculation.com