Add 28/20 and 15/10
1st number: 1 8/20, 2nd number: 1 5/10
28/20 + 15/10 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
15/10 = 15 × 2/10 × 2 = 30/20 - Add the two like fractions:
28/20 + 30/20 = 28 + 30/20 = 58/20 - 58/20 simplified gives 29/10
- So, 28/20 + 15/10 = 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: 56/20+15/10 28/20+30/10 28/40+15/10 28/20+15/20 84/20+15/10 28/20+45/10 28/60+15/10 28/20+15/30 28/20+75/10 28/20+15/50 28/20+15/70