Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/9 and 1/20

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

21/9 + 1/20 is 143/60.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    21/9 = 21 × 20/9 × 20 = 420/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    1/20 = 1 × 9/20 × 9 = 9/180
  4. Add the two like fractions:
    420/180 + 9/180 = 420 + 9/180 = 429/180
  5. 429/180 simplified gives 143/60
  6. So, 21/9 + 1/20 = 143/60
    In mixed form: 223/60

MathStep (Works offline)

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

Related:

© everydaycalculation.com