Add 56/12 and 21/18
1st number: 4 8/12, 2nd number: 1 3/18
56/12 + 21/18 is 35/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
56/12 = 56 × 3/12 × 3 = 168/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Add the two like fractions:
168/36 + 42/36 = 168 + 42/36 = 210/36 - 210/36 simplified gives 35/6
- So, 56/12 + 21/18 = 35/6
In mixed form: 55/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+42/18 56/24+21/18 56/12+21/36 56/12+63/18 56/36+21/18 56/12+21/54 56/60+21/18 56/12+21/90 56/84+21/18