Add 21/49 and 28/10
1st number: 21/49, 2nd number: 2 8/10
21/49 + 28/10 is 113/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
21/49 = 21 × 10/49 × 10 = 210/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
28/10 = 28 × 49/10 × 49 = 1372/490 - Add the two like fractions:
210/490 + 1372/490 = 210 + 1372/490 = 1582/490 - 1582/490 simplified gives 113/35
- So, 21/49 + 28/10 = 113/35
In mixed form: 38/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/49+28/10 21/49+56/10 21/98+28/10 21/49+28/20 63/49+28/10 21/49+84/10 21/49+28/30 21/49+28/50 21/49+28/70