Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/21 and 3/80

7/21 + 3/80 is 89/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    7/21 = 7 × 80/21 × 80 = 560/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    3/80 = 3 × 21/80 × 21 = 63/1680
  4. Add the two like fractions:
    560/1680 + 63/1680 = 560 + 63/1680 = 623/1680
  5. 623/1680 simplified gives 89/240
  6. So, 7/21 + 3/80 = 89/240

MathStep (Works offline)

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

Related:

© everydaycalculation.com