Add 45/8 and 21/14
1st number: 5 5/8, 2nd number: 1 7/14
45/8 + 21/14 is 57/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 14 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
45/8 = 45 × 7/8 × 7 = 315/56 - Likewise, for the 2nd fraction, since 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Add the two like fractions:
315/56 + 84/56 = 315 + 84/56 = 399/56 - 399/56 simplified gives 57/8
- So, 45/8 + 21/14 = 57/8
In mixed form: 71/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+21/14 45/8+42/14 45/16+21/14 45/8+21/28 45/8+63/14 45/24+21/14 45/8+21/42 45/40+21/14 45/8+21/70 45/56+21/14 45/8+21/98