Add 14/4 and 9/21
1st number: 3 2/4, 2nd number: 9/21
14/4 + 9/21 is 55/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
14/4 = 14 × 21/4 × 21 = 294/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84 - Add the two like fractions:
294/84 + 36/84 = 294 + 36/84 = 330/84 - 330/84 simplified gives 55/14
- So, 14/4 + 9/21 = 55/14
In mixed form: 313/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/4+9/21 14/4+18/21 14/8+9/21 14/4+9/42 42/4+9/21 14/4+27/21 14/12+9/21 14/4+9/63 70/4+9/21 14/4+45/21 14/20+9/21 98/4+9/21 14/4+63/21 14/28+9/21