Add 9/84 and 30/81
9/84 + 30/81 is 361/756.
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,
30/81 = 30 × 28/81 × 28 = 840/2268 - Add the two like fractions:
243/2268 + 840/2268 = 243 + 840/2268 = 1083/2268 - 1083/2268 simplified gives 361/756
- So, 9/84 + 30/81 = 361/756
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+30/81 9/84+60/81 27/84+30/81 9/84+90/81 45/84+30/81 63/84+30/81