Add 28/5 and 15/84
1st number: 5 3/5, 2nd number: 15/84
28/5 + 15/84 is 809/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
28/5 = 28 × 84/5 × 84 = 2352/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Add the two like fractions:
2352/420 + 75/420 = 2352 + 75/420 = 2427/420 - 2427/420 simplified gives 809/140
- So, 28/5 + 15/84 = 809/140
In mixed form: 5109/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+15/84 28/5+30/84 28/10+15/84 84/5+15/84 28/5+45/84 28/15+15/84 28/5+75/84 28/25+15/84 28/35+15/84