Add 15/18 and 2/10
15/18 + 2/10 is 31/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
2/10 = 2 × 9/10 × 9 = 18/90 - Add the two like fractions:
75/90 + 18/90 = 75 + 18/90 = 93/90 - 93/90 simplified gives 31/30
- So, 15/18 + 2/10 = 31/30
In mixed form: 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+2/10 15/18+4/10 15/36+2/10 15/18+2/20 45/18+2/10 15/18+6/10 15/54+2/10 15/18+2/30 75/18+2/10 15/90+2/10 15/18+2/50 15/18+14/10 15/18+2/70