Add 14/21 and 81/5
1st number: 14/21, 2nd number: 16 1/5
14/21 + 81/5 is 253/15.
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,
81/5 = 81 × 21/5 × 21 = 1701/105 - Add the two like fractions:
70/105 + 1701/105 = 70 + 1701/105 = 1771/105 - 1771/105 simplified gives 253/15
- So, 14/21 + 81/5 = 253/15
In mixed form: 1613/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21+81/5 14/42+81/5 14/21+81/10 42/21+81/5 14/63+81/5 14/21+81/15 70/21+81/5 14/21+81/25 98/21+81/5 14/21+81/35