Add 18/12 and 63/4
1st number: 1 6/12, 2nd number: 15 3/4
18/12 + 63/4 is 69/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
18/12 = 18 × 1/12 × 1 = 18/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
63/4 = 63 × 3/4 × 3 = 189/12 - Add the two like fractions:
18/12 + 189/12 = 18 + 189/12 = 207/12 - 207/12 simplified gives 69/4
- So, 18/12 + 63/4 = 69/4
In mixed form: 171/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+63/4 18/24+63/4 18/12+63/8 54/12+63/4 18/36+63/4 18/12+63/12 90/12+63/4 18/60+63/4 18/12+63/20 18/84+63/4 18/12+63/28