Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/80 and 21/27

7/80 + 21/27 is 623/720.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 27 is 2160

    Next, find the equivalent fraction of both fractional numbers with denominator 2160
  2. For the 1st fraction, since 80 × 27 = 2160,
    7/80 = 7 × 27/80 × 27 = 189/2160
  3. Likewise, for the 2nd fraction, since 27 × 80 = 2160,
    21/27 = 21 × 80/27 × 80 = 1680/2160
  4. Add the two like fractions:
    189/2160 + 1680/2160 = 189 + 1680/2160 = 1869/2160
  5. 1869/2160 simplified gives 623/720
  6. So, 7/80 + 21/27 = 623/720

MathStep (Works offline)

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

Related:

© everydaycalculation.com