Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/81 and 75/10

1st number: 21/81, 2nd number: 7 5/10

21/81 + 75/10 is 419/54.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 10 is 810

    Next, find the equivalent fraction of both fractional numbers with denominator 810
  2. For the 1st fraction, since 81 × 10 = 810,
    21/81 = 21 × 10/81 × 10 = 210/810
  3. Likewise, for the 2nd fraction, since 10 × 81 = 810,
    75/10 = 75 × 81/10 × 81 = 6075/810
  4. Add the two like fractions:
    210/810 + 6075/810 = 210 + 6075/810 = 6285/810
  5. 6285/810 simplified gives 419/54
  6. So, 21/81 + 75/10 = 419/54
    In mixed form: 741/54

MathStep (Works offline)

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

Related:

© everydaycalculation.com