Add 12/40 and 56/18
1st number: 12/40, 2nd number: 3 2/18
12/40 + 56/18 is 307/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
56/18 = 56 × 20/18 × 20 = 1120/360 - Add the two like fractions:
108/360 + 1120/360 = 108 + 1120/360 = 1228/360 - 1228/360 simplified gives 307/90
- So, 12/40 + 56/18 = 307/90
In mixed form: 337/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+56/18 12/80+56/18 12/40+56/36 36/40+56/18 12/40+56/54 60/40+56/18 12/40+56/90 84/40+56/18