Add 28/12 and 56/40
1st number: 2 4/12, 2nd number: 1 16/40
28/12 + 56/40 is 56/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
28/12 = 28 × 10/12 × 10 = 280/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
56/40 = 56 × 3/40 × 3 = 168/120 - Add the two like fractions:
280/120 + 168/120 = 280 + 168/120 = 448/120 - 448/120 simplified gives 56/15
- So, 28/12 + 56/40 = 56/15
In mixed form: 311/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+56/40 28/24+56/40 28/12+56/80 84/12+56/40 28/36+56/40 28/60+56/40 28/84+56/40