Add 15/12 and 18/56
1st number: 1 3/12, 2nd number: 18/56
15/12 + 18/56 is 11/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
15/12 = 15 × 14/12 × 14 = 210/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
18/56 = 18 × 3/56 × 3 = 54/168 - Add the two like fractions:
210/168 + 54/168 = 210 + 54/168 = 264/168 - 264/168 simplified gives 11/7
- So, 15/12 + 18/56 = 11/7
In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+18/56 15/12+36/56 15/24+18/56 45/12+18/56 15/12+54/56 15/36+18/56 75/12+18/56 15/12+90/56 15/60+18/56 15/84+18/56