Add 3/6 and 21/18
1st number: 3/6, 2nd number: 1 3/18
36 + 2118 is 53.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
36 = 3 × 36 × 3 = 918 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
2118 = 21 × 118 × 1 = 2118 - Add the two like fractions:
918 + 2118 = 9 + 2118 = 3018 - 30/18 simplified gives 53
- So, 3/6 + 21/18 = 5/3
In mixed form: 123
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 3/6+42/18 3/12+21/18 3/6+21/36 9/6+21/18 3/6+63/18 3/18+21/18 3/6+21/54 15/6+21/18 3/30+21/18 3/6+21/90 21/6+21/18 3/42+21/18