Add 45/16 and 21/10
1st number: 2 13/16, 2nd number: 2 1/10
45/16 + 21/10 is 393/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
45/16 = 45 × 5/16 × 5 = 225/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
21/10 = 21 × 8/10 × 8 = 168/80 - Add the two like fractions:
225/80 + 168/80 = 225 + 168/80 = 393/80 - So, 45/16 + 21/10 = 393/80
In mixed form: 473/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/16+21/10 45/16+42/10 45/32+21/10 45/16+21/20 45/16+63/10 45/48+21/10 45/16+21/30 45/80+21/10 45/16+21/50 45/16+21/70