Add 18/12 and 15/28
1st number: 1 6/12, 2nd number: 15/28
18/12 + 15/28 is 57/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Add the two like fractions:
126/84 + 45/84 = 126 + 45/84 = 171/84 - 171/84 simplified gives 57/28
- So, 18/12 + 15/28 = 57/28
In mixed form: 21/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+15/28 18/12+30/28 18/24+15/28 18/12+15/56 54/12+15/28 18/12+45/28 18/36+15/28 18/12+15/84 90/12+15/28 18/12+75/28 18/60+15/28 18/84+15/28