Answers

Add 12/84 and 6/81

12/84 + 6/81 is 41/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 84 × 27 = 2268,
   12/84 = 12 × 27/84 × 27 = 324/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   6/81 = 6 × 28/81 × 28 = 168/2268
4. Add the two like fractions:
   324/2268 + 168/2268 = 324 + 168/2268 = 492/2268
5. 492/2268 simplified gives 41/189
6. So, 12/84 + 6/81 = 41/189

MathStep (Works offline)

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

Related: ²⁴/₈₄+⁶/₈₁ ¹²/₈₄+¹²/₈₁ ³⁶/₈₄+⁶/₈₁ ¹²/₈₄+¹⁸/₈₁ ⁶⁰/₈₄+⁶/₈₁ ¹²/₈₄+³⁰/₈₁ ¹²/₈₄+⁴²/₈₁

Add Fractions Calculator