Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/28 and 28/80

21/28 + 28/80 is 11/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 28 × 20 = 560,
    21/28 = 21 × 20/28 × 20 = 420/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    28/80 = 28 × 7/80 × 7 = 196/560
  4. Add the two like fractions:
    420/560 + 196/560 = 420 + 196/560 = 616/560
  5. 616/560 simplified gives 11/10
  6. So, 21/28 + 28/80 = 11/10
    In mixed form: 11/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com