Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 3/42 and 45/20

1st number: 3/42, 2nd number: 2 5/20

3/42 + 45/20 is 65/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420
  2. For the 1st fraction, since 42 × 10 = 420,
    3/42 = 3 × 10/42 × 10 = 30/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    45/20 = 45 × 21/20 × 21 = 945/420
  4. Add the two fractions:
    30/420 + 945/420 = 30 + 945/420 = 975/420
  5. After reducing the fraction, the answer is 65/28
  6. In mixed form: 29/28

MathStep (Works offline)

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

Related:

© everydaycalculation.com