Add 14/8 and 21/7
1st number: 1 6/8, 2nd number: 3 0/7
14/8 + 21/7 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
14/8 = 14 × 7/8 × 7 = 98/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
21/7 = 21 × 8/7 × 8 = 168/56 - Add the two like fractions:
98/56 + 168/56 = 98 + 168/56 = 266/56 - 266/56 simplified gives 19/4
- So, 14/8 + 21/7 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/8+21/7 14/8+42/7 14/16+21/7 14/8+21/14 42/8+21/7 14/8+63/7 14/24+21/7 70/8+21/7 14/40+21/7 14/8+21/35 98/8+21/7 14/56+21/7 14/8+21/49