Add 27/40 and 15/16
27/40 + 15/16 is 129/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
27/40 = 27 × 2/40 × 2 = 54/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
15/16 = 15 × 5/16 × 5 = 75/80 - Add the two like fractions:
54/80 + 75/80 = 54 + 75/80 = 129/80 - So, 27/40 + 15/16 = 129/80
In mixed form: 149/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+15/16 27/40+30/16 27/80+15/16 27/40+15/32 81/40+15/16 27/40+45/16 27/40+15/48 27/40+75/16 27/40+15/80