Add 21/18 and 7/36
1st number: 1 3/18, 2nd number: 7/36
21/18 + 7/36 is 49/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
7/36 = 7 × 1/36 × 1 = 7/36 - Add the two like fractions:
42/36 + 7/36 = 42 + 7/36 = 49/36 - So, 21/18 + 7/36 = 49/36
In mixed form: 113/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+7/36 21/18+14/36 21/36+7/36 21/18+7/72 63/18+7/36 21/18+21/36 21/54+7/36 21/18+35/36 21/90+7/36 21/18+49/36