Add 4/5 and 15/18
4/5 + 15/18 is 49/30.
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,
4/5 = 4 × 18/5 × 18 = 72/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Add the two like fractions:
72/90 + 75/90 = 72 + 75/90 = 147/90 - 147/90 simplified gives 49/30
- So, 4/5 + 15/18 = 49/30
In mixed form: 119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5+15/18 4/5+30/18 4/10+15/18 4/5+15/36 12/5+15/18 4/5+45/18 4/15+15/18 4/5+15/54 20/5+15/18 4/5+75/18 4/25+15/18 4/5+15/90 28/5+15/18 4/35+15/18