Add 15/40 and 28/27
1st number: 15/40, 2nd number: 1 1/27
15/40 + 28/27 is 305/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
15/40 = 15 × 27/40 × 27 = 405/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
28/27 = 28 × 40/27 × 40 = 1120/1080 - Add the two like fractions:
405/1080 + 1120/1080 = 405 + 1120/1080 = 1525/1080 - 1525/1080 simplified gives 305/216
- So, 15/40 + 28/27 = 305/216
In mixed form: 189/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+28/27 15/40+56/27 15/80+28/27 15/40+28/54 45/40+28/27 15/40+84/27 15/40+28/81 75/40+28/27