Add 3/5 and 9/18
3/5 + 9/18 is 11/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
3/5 = 3 × 18/5 × 18 = 54/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Add the two like fractions:
54/90 + 45/90 = 54 + 45/90 = 99/90 - 99/90 simplified gives 11/10
- So, 3/5 + 9/18 = 11/10
In mixed form: 11/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+9/18 3/10+9/18 3/5+9/36 9/5+9/18 3/5+27/18 3/15+9/18 3/5+9/54 15/5+9/18 3/5+45/18 3/25+9/18 3/5+9/90 21/5+9/18 3/5+63/18 3/35+9/18