Add 81/16 and 28/10
1st number: 5 1/16, 2nd number: 2 8/10
81/16 + 28/10 is 629/80.
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,
81/16 = 81 × 5/16 × 5 = 405/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
28/10 = 28 × 8/10 × 8 = 224/80 - Add the two like fractions:
405/80 + 224/80 = 405 + 224/80 = 629/80 - So, 81/16 + 28/10 = 629/80
In mixed form: 769/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/16+56/10 81/32+28/10 81/16+28/20 81/16+84/10 81/48+28/10 81/16+28/30 81/80+28/10 81/16+28/50 81/16+28/70