Add 30/84 and 98/81
1st number: 30/84, 2nd number: 1 17/81
30/84 + 98/81 is 1777/1134.
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,
30/84 = 30 × 27/84 × 27 = 810/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
98/81 = 98 × 28/81 × 28 = 2744/2268 - Add the two like fractions:
810/2268 + 2744/2268 = 810 + 2744/2268 = 3554/2268 - 3554/2268 simplified gives 1777/1134
- So, 30/84 + 98/81 = 1777/1134
In mixed form: 1643/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+98/81 90/84+98/81