Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/40 and 21/54

21/40 + 21/54 is 329/360.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 54 is 1080

    Next, find the equivalent fraction of both fractional numbers with denominator 1080
  2. For the 1st fraction, since 40 × 27 = 1080,
    21/40 = 21 × 27/40 × 27 = 567/1080
  3. Likewise, for the 2nd fraction, since 54 × 20 = 1080,
    21/54 = 21 × 20/54 × 20 = 420/1080
  4. Add the two like fractions:
    567/1080 + 420/1080 = 567 + 420/1080 = 987/1080
  5. 987/1080 simplified gives 329/360
  6. So, 21/40 + 21/54 = 329/360

MathStep (Works offline)

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

Related:

© everydaycalculation.com