Add 12/81 and 14/84
12/81 + 14/84 is 17/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 84 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
12/81 = 12 × 28/81 × 28 = 336/2268 - Likewise, for the 2nd fraction, since 84 × 27 = 2268,
14/84 = 14 × 27/84 × 27 = 378/2268 - Add the two like fractions:
336/2268 + 378/2268 = 336 + 378/2268 = 714/2268 - 714/2268 simplified gives 17/54
- So, 12/81 + 14/84 = 17/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/81+14/84 12/81+28/84 36/81+14/84 12/81+42/84 60/81+14/84 12/81+70/84 84/81+14/84 12/81+98/84