Add 6/30 and 21/81
6/30 + 21/81 is 62/135.
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,
6/30 = 6 × 27/30 × 27 = 162/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
21/81 = 21 × 10/81 × 10 = 210/810 - Add the two like fractions:
162/810 + 210/810 = 162 + 210/810 = 372/810 - 372/810 simplified gives 62/135
- So, 6/30 + 21/81 = 62/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30+21/81 6/30+42/81 6/60+21/81 18/30+21/81 6/30+63/81 6/90+21/81 42/30+21/81