Add 28/15 and 5/84
1st number: 1 13/15, 2nd number: 5/84
28/15 + 5/84 is 809/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
28/15 = 28 × 28/15 × 28 = 784/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Add the two like fractions:
784/420 + 25/420 = 784 + 25/420 = 809/420 - So, 28/15 + 5/84 = 809/420
In mixed form: 1389/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+5/84 28/15+10/84 28/30+5/84 84/15+5/84 28/15+15/84 28/45+5/84 28/15+25/84 28/75+5/84 28/15+35/84