Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 28/70 and 15/80

28/70 + 15/80 is 47/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    28/70 = 28 × 8/70 × 8 = 224/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    15/80 = 15 × 7/80 × 7 = 105/560
  4. Add the two like fractions:
    224/560 + 105/560 = 224 + 105/560 = 329/560
  5. 329/560 simplified gives 47/80
  6. So, 28/70 + 15/80 = 47/80

MathStep (Works offline)

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

Related:

© everydaycalculation.com