Add 21/18 and 1/27
1st number: 1 3/18, 2nd number: 1/27
21/18 + 1/27 is 65/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
21/18 = 21 × 3/18 × 3 = 63/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
1/27 = 1 × 2/27 × 2 = 2/54 - Add the two like fractions:
63/54 + 2/54 = 63 + 2/54 = 65/54 - So, 21/18 + 1/27 = 65/54
In mixed form: 111/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+1/27 21/18+2/27 21/36+1/27 21/18+1/54 63/18+1/27 21/18+3/27 21/54+1/27 21/18+1/81 21/18+5/27 21/90+1/27 21/18+7/27