Answers

Add 12/81 and 9/60

12/81 + 9/60 is 161/540.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 60 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 81 × 20 = 1620,
   12/81 = 12 × 20/81 × 20 = 240/1620
3. Likewise, for the 2nd fraction, since 60 × 27 = 1620,
   9/60 = 9 × 27/60 × 27 = 243/1620
4. Add the two like fractions:
   240/1620 + 243/1620 = 240 + 243/1620 = 483/1620
5. 483/1620 simplified gives 161/540
6. So, 12/81 + 9/60 = 161/540

MathStep (Works offline)

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

Related: ²⁴/₈₁+⁹/₆₀ ¹²/₈₁+¹⁸/₆₀ ³⁶/₈₁+⁹/₆₀ ¹²/₈₁+²⁷/₆₀ ⁶⁰/₈₁+⁹/₆₀ ¹²/₈₁+⁴⁵/₆₀ ⁸⁴/₈₁+⁹/₆₀ ¹²/₈₁+⁶³/₆₀

Add Fractions Calculator