Add 28/8 and 15/9
1st number: 3 4/8, 2nd number: 1 6/9
28/8 + 15/9 is 31/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
28/8 = 28 × 9/8 × 9 = 252/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
15/9 = 15 × 8/9 × 8 = 120/72 - Add the two like fractions:
252/72 + 120/72 = 252 + 120/72 = 372/72 - 372/72 simplified gives 31/6
- So, 28/8 + 15/9 = 31/6
In mixed form: 51/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8+15/9 28/8+30/9 28/16+15/9 28/8+15/18 84/8+15/9 28/8+45/9 28/24+15/9 28/8+15/27 28/8+75/9 28/40+15/9 28/8+15/45 28/56+15/9 28/8+15/63