Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 28/84 and 4/80

28/84 + 4/80 is 23/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 80 is 1680
  2. For the 1st fraction, since 84 × 20 = 1680,
    28/84 = 28 × 20/84 × 20 = 560/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    4/80 = 4 × 21/80 × 21 = 84/1680
  4. Add the two fractions:
    560/1680 + 84/1680 = 560 + 84/1680 = 644/1680
  5. After reducing the fraction, the answer is 23/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com