Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/20 and 21/9

1st number: 7/20, 2nd number: 2 3/9

7/20 + 21/9 is 161/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    7/20 = 7 × 9/20 × 9 = 63/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    21/9 = 21 × 20/9 × 20 = 420/180
  4. Add the two like fractions:
    63/180 + 420/180 = 63 + 420/180 = 483/180
  5. 483/180 simplified gives 161/60
  6. So, 7/20 + 21/9 = 161/60
    In mixed form: 241/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com