Add 9/10 and 18/15
1st number: 9/10, 2nd number: 1 3/15
9/10 + 18/15 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
9/10 = 9 × 3/10 × 3 = 27/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
18/15 = 18 × 2/15 × 2 = 36/30 - Add the two like fractions:
27/30 + 36/30 = 27 + 36/30 = 63/30 - 63/30 simplified gives 21/10
- So, 9/10 + 18/15 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/10+18/15 9/10+36/15 9/20+18/15 9/10+18/30 27/10+18/15 9/10+54/15 9/30+18/15 9/10+18/45 45/10+18/15 9/10+90/15 9/50+18/15 9/10+18/75 63/10+18/15 9/70+18/15