Add 6/5 and 9/21
1st number: 1 1/5, 2nd number: 9/21
6/5 + 9/21 is 57/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
6/5 = 6 × 21/5 × 21 = 126/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
9/21 = 9 × 5/21 × 5 = 45/105 - Add the two like fractions:
126/105 + 45/105 = 126 + 45/105 = 171/105 - 171/105 simplified gives 57/35
- So, 6/5 + 9/21 = 57/35
In mixed form: 122/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/5+9/21 6/5+18/21 6/10+9/21 6/5+9/42 18/5+9/21 6/5+27/21 6/15+9/21 6/5+9/63 30/5+9/21 6/5+45/21 6/25+9/21 42/5+9/21 6/5+63/21 6/35+9/21