Add 1/21 and 9/5
1st number: 1/21, 2nd number: 1 4/5
1/21 + 9/5 is 194/105.
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,
1/21 = 1 × 5/21 × 5 = 5/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
9/5 = 9 × 21/5 × 21 = 189/105 - Add the two like fractions:
5/105 + 189/105 = 5 + 189/105 = 194/105 - So, 1/21 + 9/5 = 194/105
In mixed form: 189/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+9/5 1/21+18/5 1/42+9/5 1/21+9/10 3/21+9/5 1/21+27/5 1/63+9/5 1/21+9/15 5/21+9/5 1/21+45/5 1/21+9/25 7/21+9/5 1/21+63/5 1/21+9/35