Add 28/6 and 9/21
1st number: 4 4/6, 2nd number: 9/21
28/6 + 9/21 is 107/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
28/6 = 28 × 7/6 × 7 = 196/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
9/21 = 9 × 2/21 × 2 = 18/42 - Add the two like fractions:
196/42 + 18/42 = 196 + 18/42 = 214/42 - 214/42 simplified gives 107/21
- So, 28/6 + 9/21 = 107/21
In mixed form: 52/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/6+9/21 28/6+18/21 28/12+9/21 28/6+9/42 84/6+9/21 28/6+27/21 28/18+9/21 28/6+9/63 28/6+45/21 28/30+9/21 28/6+63/21 28/42+9/21