Add 45/4 and 18/12
1st number: 11 1/4, 2nd number: 1 6/12
45/4 + 18/12 is 51/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
45/4 = 45 × 3/4 × 3 = 135/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
18/12 = 18 × 1/12 × 1 = 18/12 - Add the two like fractions:
135/12 + 18/12 = 135 + 18/12 = 153/12 - 153/12 simplified gives 51/4
- So, 45/4 + 18/12 = 51/4
In mixed form: 123/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+18/12 45/4+36/12 45/8+18/12 45/4+18/24 45/4+54/12 45/12+18/12 45/4+18/36 45/4+90/12 45/20+18/12 45/4+18/60 45/28+18/12 45/4+18/84