Add 28/7 and 15/10
1st number: 4 0/7, 2nd number: 1 5/10
28/7 + 15/10 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
28/7 = 28 × 10/7 × 10 = 280/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
15/10 = 15 × 7/10 × 7 = 105/70 - Add the two like fractions:
280/70 + 105/70 = 280 + 105/70 = 385/70 - 385/70 simplified gives 11/2
- So, 28/7 + 15/10 = 11/2
In mixed form: 51/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+15/10 28/7+30/10 28/14+15/10 28/7+15/20 84/7+15/10 28/7+45/10 28/21+15/10 28/7+15/30 28/7+75/10 28/35+15/10 28/7+15/50 28/49+15/10 28/7+15/70