Add 15/40 and 80/54
1st number: 15/40, 2nd number: 1 26/54
15/40 + 80/54 is 401/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 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 54 × 20 = 1080,
80/54 = 80 × 20/54 × 20 = 1600/1080 - Add the two like fractions:
405/1080 + 1600/1080 = 405 + 1600/1080 = 2005/1080 - 2005/1080 simplified gives 401/216
- So, 15/40 + 80/54 = 401/216
In mixed form: 1185/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+80/54 15/80+80/54 45/40+80/54 75/40+80/54