Add 45/5 and 80/9
1st number: 9 0/5, 2nd number: 8 8/9
45/5 + 80/9 is 161/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
45/5 = 45 × 9/5 × 9 = 405/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
80/9 = 80 × 5/9 × 5 = 400/45 - Add the two like fractions:
405/45 + 400/45 = 405 + 400/45 = 805/45 - 805/45 simplified gives 161/9
- So, 45/5 + 80/9 = 161/9
In mixed form: 178/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5+80/9 45/10+80/9 45/5+80/18 45/15+80/9 45/5+80/27 45/25+80/9 45/5+80/45 45/35+80/9 45/5+80/63