Add 21/2 and 28/63
1st number: 10 1/2, 2nd number: 28/63
21/2 + 28/63 is 197/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 2 × 63 = 126,
21/2 = 21 × 63/2 × 63 = 1323/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
28/63 = 28 × 2/63 × 2 = 56/126 - Add the two like fractions:
1323/126 + 56/126 = 1323 + 56/126 = 1379/126 - 1379/126 simplified gives 197/18
- So, 21/2 + 28/63 = 197/18
In mixed form: 1017/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+28/63 21/2+56/63 21/4+28/63 63/2+28/63 21/2+84/63 21/6+28/63 21/10+28/63 21/14+28/63