Add 9/84 and 20/81
9/84 + 20/81 is 803/2268.
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,
9/84 = 9 × 27/84 × 27 = 243/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
20/81 = 20 × 28/81 × 28 = 560/2268 - Add the two like fractions:
243/2268 + 560/2268 = 243 + 560/2268 = 803/2268 - So, 9/84 + 20/81 = 803/2268
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+20/81 9/84+40/81 27/84+20/81 9/84+60/81 45/84+20/81 63/84+20/81