Add 15/84 and 36/81
15/84 + 36/81 is 157/252.
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,
15/84 = 15 × 27/84 × 27 = 405/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
36/81 = 36 × 28/81 × 28 = 1008/2268 - Add the two like fractions:
405/2268 + 1008/2268 = 405 + 1008/2268 = 1413/2268 - 1413/2268 simplified gives 157/252
- So, 15/84 + 36/81 = 157/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84+36/81 15/84+72/81 45/84+36/81 75/84+36/81