Add 21/10 and 15/6
1st number: 2 1/10, 2nd number: 2 3/6
21/10 + 15/6 is 23/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
21/10 = 21 × 3/10 × 3 = 63/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
15/6 = 15 × 5/6 × 5 = 75/30 - Add the two like fractions:
63/30 + 75/30 = 63 + 75/30 = 138/30 - 138/30 simplified gives 23/5
- So, 21/10 + 15/6 = 23/5
In mixed form: 43/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+15/6 21/10+30/6 21/20+15/6 21/10+15/12 63/10+15/6 21/10+45/6 21/30+15/6 21/10+15/18 21/10+75/6 21/50+15/6 21/10+15/30 21/70+15/6 21/10+15/42