Add 4/40 and 21/16
1st number: 4/40, 2nd number: 1 5/16
4/40 + 21/16 is 113/80.
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,
4/40 = 4 × 2/40 × 2 = 8/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Add the two like fractions:
8/80 + 105/80 = 8 + 105/80 = 113/80 - So, 4/40 + 21/16 = 113/80
In mixed form: 133/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40+21/16 4/40+42/16 4/80+21/16 4/40+21/32 12/40+21/16 4/40+63/16 4/40+21/48 20/40+21/16 4/40+21/80 28/40+21/16