Add 18/40 and 28/12
1st number: 18/40, 2nd number: 2 4/12
18/40 + 28/12 is 167/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
28/12 = 28 × 10/12 × 10 = 280/120 - Add the two like fractions:
54/120 + 280/120 = 54 + 280/120 = 334/120 - 334/120 simplified gives 167/60
- So, 18/40 + 28/12 = 167/60
In mixed form: 247/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+28/12 18/40+56/12 18/80+28/12 18/40+28/24 54/40+28/12 18/40+84/12 18/40+28/36 90/40+28/12 18/40+28/60 18/40+28/84