Add 80/15 and 9/8
1st number: 5 5/15, 2nd number: 1 1/8
80/15 + 9/8 is 155/24.
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,
80/15 = 80 × 8/15 × 8 = 640/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
9/8 = 9 × 15/8 × 15 = 135/120 - Add the two like fractions:
640/120 + 135/120 = 640 + 135/120 = 775/120 - 775/120 simplified gives 155/24
- So, 80/15 + 9/8 = 155/24
In mixed form: 611/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+18/8 80/30+9/8 80/15+9/16 80/15+27/8 80/45+9/8 80/15+9/24 80/15+45/8 80/75+9/8 80/15+9/40 80/15+63/8 80/15+9/56