Add 15/6 and 21/45
1st number: 2 3/6, 2nd number: 21/45
15/6 + 21/45 is 89/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
15/6 = 15 × 15/6 × 15 = 225/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
225/90 + 42/90 = 225 + 42/90 = 267/90 - 267/90 simplified gives 89/30
- So, 15/6 + 21/45 = 89/30
In mixed form: 229/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/6+21/45 15/6+42/45 15/12+21/45 15/6+21/90 45/6+21/45 15/6+63/45 15/18+21/45 75/6+21/45 15/30+21/45 15/42+21/45