Add 15/10 and 28/20
1st number: 1 5/10, 2nd number: 1 8/20
15/10 + 28/20 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
15/10 = 15 × 2/10 × 2 = 30/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Add the two like fractions:
30/20 + 28/20 = 30 + 28/20 = 58/20 - 58/20 simplified gives 29/10
- So, 15/10 + 28/20 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10+28/20 15/10+56/20 15/20+28/20 15/10+28/40 45/10+28/20 15/10+84/20 15/30+28/20 15/10+28/60 75/10+28/20 15/50+28/20 15/70+28/20