Answers

Add 72/81 and 2/45

72/81 + 2/45 is 14/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 45 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   72/81 = 72 × 5/81 × 5 = 360/405
3. Likewise, for the 2nd fraction, since 45 × 9 = 405,
   2/45 = 2 × 9/45 × 9 = 18/405
4. Add the two like fractions:
   360/405 + 18/405 = 360 + 18/405 = 378/405
5. 378/405 simplified gives 14/15
6. So, 72/81 + 2/45 = 14/15

MathStep (Works offline)

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

Related: ⁷²/₈₁+⁴/₄₅ ⁷²/₈₁+²/₉₀ ⁷²/₈₁+⁶/₄₅ ⁷²/₈₁+¹⁰/₄₅ ⁷²/₈₁+¹⁴/₄₅

Add Fractions Calculator