Add 3/15 and 15/8
1st number: 3/15, 2nd number: 1 7/8
3/15 + 15/8 is 83/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
3/15 = 3 × 8/15 × 8 = 24/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120 - Add the two like fractions:
24/120 + 225/120 = 24 + 225/120 = 249/120 - 249/120 simplified gives 83/40
- So, 3/15 + 15/8 = 83/40
In mixed form: 23/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15+15/8 3/15+30/8 3/30+15/8 3/15+15/16 9/15+15/8 3/15+45/8 3/45+15/8 3/15+15/24 3/15+75/8 3/75+15/8 3/15+15/40 21/15+15/8 3/15+15/56