Add 18/15 and 40/9
1st number: 1 3/15, 2nd number: 4 4/9
18/15 + 40/9 is 254/45.
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,
18/15 = 18 × 3/15 × 3 = 54/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
40/9 = 40 × 5/9 × 5 = 200/45 - Add the two like fractions:
54/45 + 200/45 = 54 + 200/45 = 254/45 - So, 18/15 + 40/9 = 254/45
In mixed form: 529/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+40/9 18/15+80/9 18/30+40/9 18/15+40/18 54/15+40/9 18/45+40/9 18/15+40/27 90/15+40/9 18/75+40/9 18/15+40/45 18/15+40/63