Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/20 and 21/3

1st number: 1 1/20, 2nd number: 7 0/3

21/20 + 21/3 is 161/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 3 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 20 × 3 = 60,
    21/20 = 21 × 3/20 × 3 = 63/60
  3. Likewise, for the 2nd fraction, since 3 × 20 = 60,
    21/3 = 21 × 20/3 × 20 = 420/60
  4. Add the two like fractions:
    63/60 + 420/60 = 63 + 420/60 = 483/60
  5. 483/60 simplified gives 161/20
  6. So, 21/20 + 21/3 = 161/20
    In mixed form: 81/20

MathStep (Works offline)

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

Related:

© everydaycalculation.com