Add 81/8 and 80/60
1st number: 10 1/8, 2nd number: 1 20/60
81/8 + 80/60 is 275/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
81/8 = 81 × 15/8 × 15 = 1215/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
80/60 = 80 × 2/60 × 2 = 160/120 - Add the two like fractions:
1215/120 + 160/120 = 1215 + 160/120 = 1375/120 - 1375/120 simplified gives 275/24
- So, 81/8 + 80/60 = 275/24
In mixed form: 1111/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/16+80/60 81/24+80/60 81/40+80/60 81/56+80/60