Add 21/2 and 81/14
1st number: 10 1/2, 2nd number: 5 11/14
21/2 + 81/14 is 114/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 14 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
21/2 = 21 × 7/2 × 7 = 147/14 - Likewise, for the 2nd fraction, since 14 × 1 = 14,
81/14 = 81 × 1/14 × 1 = 81/14 - Add the two like fractions:
147/14 + 81/14 = 147 + 81/14 = 228/14 - 228/14 simplified gives 114/7
- So, 21/2 + 81/14 = 114/7
In mixed form: 162/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+81/14 21/4+81/14 21/2+81/28 63/2+81/14 21/6+81/14 21/2+81/42 21/10+81/14 21/2+81/70 21/14+81/14 21/2+81/98