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