Add 15/42 and 63/28
1st number: 15/42, 2nd number: 2 7/28
15/42 + 63/28 is 73/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
63/28 = 63 × 3/28 × 3 = 189/84 - Add the two like fractions:
30/84 + 189/84 = 30 + 189/84 = 219/84 - 219/84 simplified gives 73/28
- So, 15/42 + 63/28 = 73/28
In mixed form: 217/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42+63/28 15/84+63/28 15/42+63/56 45/42+63/28 15/42+63/84 75/42+63/28