Add 21/8 and 25/28
1st number: 2 5/8, 2nd number: 25/28
21/8 + 25/28 is 197/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 28 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
25/28 = 25 × 2/28 × 2 = 50/56 - Add the two like fractions:
147/56 + 50/56 = 147 + 50/56 = 197/56 - So, 21/8 + 25/28 = 197/56
In mixed form: 329/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8+25/28 21/8+50/28 21/16+25/28 21/8+25/56 63/8+25/28 21/8+75/28 21/24+25/28 21/8+25/84 21/40+25/28 21/56+25/28