Add 28/5 and 42/9
1st number: 5 3/5, 2nd number: 4 6/9
28/5 + 42/9 is 154/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
28/5 = 28 × 9/5 × 9 = 252/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
42/9 = 42 × 5/9 × 5 = 210/45 - Add the two like fractions:
252/45 + 210/45 = 252 + 210/45 = 462/45 - 462/45 simplified gives 154/15
- So, 28/5 + 42/9 = 154/15
In mixed form: 104/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+42/9 28/5+84/9 28/10+42/9 28/5+42/18 84/5+42/9 28/15+42/9 28/5+42/27 28/25+42/9 28/5+42/45 28/35+42/9 28/5+42/63