Add 98/30 and 21/81
1st number: 3 8/30, 2nd number: 21/81
98/30 + 21/81 is 476/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
98/30 = 98 × 27/30 × 27 = 2646/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
21/81 = 21 × 10/81 × 10 = 210/810 - Add the two like fractions:
2646/810 + 210/810 = 2646 + 210/810 = 2856/810 - 2856/810 simplified gives 476/135
- So, 98/30 + 21/81 = 476/135
In mixed form: 371/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/30+42/81 98/60+21/81 98/30+63/81 98/90+21/81