Add 45/15 and 80/9
1st number: 3 0/15, 2nd number: 8 8/9
45/15 + 80/9 is 107/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
45/15 = 45 × 3/15 × 3 = 135/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
80/9 = 80 × 5/9 × 5 = 400/45 - Add the two like fractions:
135/45 + 400/45 = 135 + 400/45 = 535/45 - 535/45 simplified gives 107/9
- So, 45/15 + 80/9 = 107/9
In mixed form: 118/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+80/9 45/30+80/9 45/15+80/18 45/15+80/27 45/75+80/9 45/15+80/45 45/15+80/63