Add 3/30 and 21/81
3/30 + 21/81 is 97/270.
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,
3/30 = 3 × 27/30 × 27 = 81/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
21/81 = 21 × 10/81 × 10 = 210/810 - Add the two like fractions:
81/810 + 210/810 = 81 + 210/810 = 291/810 - 291/810 simplified gives 97/270
- So, 3/30 + 21/81 = 97/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30+21/81 3/30+42/81 3/60+21/81 9/30+21/81 3/30+63/81 3/90+21/81 15/30+21/81 21/30+21/81