Add 28/30 and 21/3
1st number: 28/30, 2nd number: 7 0/3
28/30 + 21/3 is 119/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
21/3 = 21 × 10/3 × 10 = 210/30 - Add the two like fractions:
28/30 + 210/30 = 28 + 210/30 = 238/30 - 238/30 simplified gives 119/15
- So, 28/30 + 21/3 = 119/15
In mixed form: 714/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+21/3 28/30+42/3 28/60+21/3 28/30+21/6 84/30+21/3 28/30+63/3 28/90+21/3 28/30+21/9 28/30+21/15