Add 14/21 and 18/5
1st number: 14/21, 2nd number: 3 3/5
14/21 + 18/5 is 64/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
14/21 = 14 × 5/21 × 5 = 70/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
18/5 = 18 × 21/5 × 21 = 378/105 - Add the two like fractions:
70/105 + 378/105 = 70 + 378/105 = 448/105 - 448/105 simplified gives 64/15
- So, 14/21 + 18/5 = 64/15
In mixed form: 44/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+18/5 14/21+36/5 14/42+18/5 14/21+18/10 42/21+18/5 14/21+54/5 14/63+18/5 14/21+18/15 70/21+18/5 14/21+90/5 14/21+18/25 98/21+18/5 14/21+18/35