Add 28/15 and 63/84
1st number: 1 13/15, 2nd number: 63/84
28/15 + 63/84 is 157/60.
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,
63/84 = 63 × 5/84 × 5 = 315/420 - Add the two like fractions:
784/420 + 315/420 = 784 + 315/420 = 1099/420 - 1099/420 simplified gives 157/60
- So, 28/15 + 63/84 = 157/60
In mixed form: 237/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+63/84 28/30+63/84 84/15+63/84 28/45+63/84 28/75+63/84