Add 15/10 and 18/9
1st number: 1 5/10, 2nd number: 2 0/9
15/10 + 18/9 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
18/9 = 18 × 10/9 × 10 = 180/90 - Add the two like fractions:
135/90 + 180/90 = 135 + 180/90 = 315/90 - 315/90 simplified gives 7/2
- So, 15/10 + 18/9 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10+18/9 15/10+36/9 15/20+18/9 45/10+18/9 15/10+54/9 15/30+18/9 15/10+18/27 75/10+18/9 15/10+90/9 15/50+18/9 15/10+18/45 15/70+18/9 15/10+18/63