Add 15/9 and 25/8
1st number: 1 6/9, 2nd number: 3 1/8
15/9 + 25/8 is 115/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
15/9 = 15 × 8/9 × 8 = 120/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
25/8 = 25 × 9/8 × 9 = 225/72 - Add the two like fractions:
120/72 + 225/72 = 120 + 225/72 = 345/72 - 345/72 simplified gives 115/24
- So, 15/9 + 25/8 = 115/24
In mixed form: 419/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9+25/8 15/9+50/8 15/18+25/8 15/9+25/16 45/9+25/8 15/9+75/8 15/27+25/8 15/9+25/24 75/9+25/8 15/45+25/8 15/9+25/40 15/63+25/8 15/9+25/56