Add 18/12 and 63/28
1st number: 1 6/12, 2nd number: 2 7/28
18/12 + 63/28 is 15/4.
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,
63/28 = 63 × 3/28 × 3 = 189/84 - Add the two like fractions:
126/84 + 189/84 = 126 + 189/84 = 315/84 - 315/84 simplified gives 15/4
- So, 18/12 + 63/28 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+63/28 18/24+63/28 18/12+63/56 54/12+63/28 18/36+63/28 18/12+63/84 90/12+63/28 18/60+63/28 18/84+63/28