Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/54 and 49/80

21/54 + 49/80 is 721/720.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 80 is 2160

    Next, find the equivalent fraction of both fractional numbers with denominator 2160
  2. For the 1st fraction, since 54 × 40 = 2160,
    21/54 = 21 × 40/54 × 40 = 840/2160
  3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
    49/80 = 49 × 27/80 × 27 = 1323/2160
  4. Add the two like fractions:
    840/2160 + 1323/2160 = 840 + 1323/2160 = 2163/2160
  5. 2163/2160 simplified gives 721/720
  6. So, 21/54 + 49/80 = 721/720
    In mixed form: 11/720

MathStep (Works offline)

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

Related:

© everydaycalculation.com