Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 30/40 and 25/81

30/40 + 25/81 is 343/324.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 81 is 3240

    Next, find the equivalent fraction of both fractional numbers with denominator 3240
  2. For the 1st fraction, since 40 × 81 = 3240,
    30/40 = 30 × 81/40 × 81 = 2430/3240
  3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
    25/81 = 25 × 40/81 × 40 = 1000/3240
  4. Add the two like fractions:
    2430/3240 + 1000/3240 = 2430 + 1000/3240 = 3430/3240
  5. 3430/3240 simplified gives 343/324
  6. So, 30/40 + 25/81 = 343/324
    In mixed form: 119/324

MathStep (Works offline)

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

Related:

© everydaycalculation.com