Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 18/20 and 81/5

1st number: 18/20, 2nd number: 16 1/5

18/20 + 81/5 is 171/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 20 × 1 = 20,
    18/20 = 18 × 1/20 × 1 = 18/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    81/5 = 81 × 4/5 × 4 = 324/20
  4. Add the two like fractions:
    18/20 + 324/20 = 18 + 324/20 = 342/20
  5. 342/20 simplified gives 171/10
  6. So, 18/20 + 81/5 = 171/10
    In mixed form: 171/10

MathStep (Works offline)

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

Related:

© everydaycalculation.com