Add 30/9 and 42/8
1st number: 3 3/9, 2nd number: 5 2/8
30/9 + 42/8 is 103/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
30/9 = 30 × 8/9 × 8 = 240/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
42/8 = 42 × 9/8 × 9 = 378/72 - Add the two like fractions:
240/72 + 378/72 = 240 + 378/72 = 618/72 - 618/72 simplified gives 103/12
- So, 30/9 + 42/8 = 103/12
In mixed form: 87/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9+42/8 30/9+84/8 30/18+42/8 30/9+42/16 90/9+42/8 30/27+42/8 30/9+42/24 30/45+42/8 30/9+42/40 30/63+42/8 30/9+42/56