Add 15/5 and 80/45
1st number: 3 0/5, 2nd number: 1 35/45
15/5 + 80/45 is 43/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
15/5 = 15 × 9/5 × 9 = 135/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
80/45 = 80 × 1/45 × 1 = 80/45 - Add the two like fractions:
135/45 + 80/45 = 135 + 80/45 = 215/45 - 215/45 simplified gives 43/9
- So, 15/5 + 80/45 = 43/9
In mixed form: 47/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5+80/45 15/10+80/45 15/5+80/90 45/5+80/45 75/5+80/45 15/25+80/45 15/35+80/45