Add 21/8 and 8/28
1st number: 2 5/8, 2nd number: 8/28
21/8 + 8/28 is 163/56.
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,
8/28 = 8 × 2/28 × 2 = 16/56 - Add the two like fractions:
147/56 + 16/56 = 147 + 16/56 = 163/56 - So, 21/8 + 8/28 = 163/56
In mixed form: 251/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8+8/28 21/8+16/28 21/16+8/28 21/8+8/56 63/8+8/28 21/8+24/28 21/24+8/28 21/8+8/84 21/8+40/28 21/40+8/28 21/8+56/28 21/56+8/28