Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 28/42 and 5/40

28/42 + 5/40 is 19/24.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 40 is 840
  2. For the 1st fraction, since 42 × 20 = 840,
    28/42 = 28 × 20/42 × 20 = 560/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    5/40 = 5 × 21/40 × 21 = 105/840
  4. Add the two fractions:
    560/840 + 105/840 = 560 + 105/840 = 665/840
  5. After reducing the fraction, the answer is 19/24

MathStep (Works offline)

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

Related:

© everydaycalculation.com