Add 15/28 and 63/15
1st number: 15/28, 2nd number: 4 3/15
15/28 + 63/15 is 663/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
15/28 = 15 × 15/28 × 15 = 225/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
63/15 = 63 × 28/15 × 28 = 1764/420 - Add the two like fractions:
225/420 + 1764/420 = 225 + 1764/420 = 1989/420 - 1989/420 simplified gives 663/140
- So, 15/28 + 63/15 = 663/140
In mixed form: 4103/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28+63/15 15/56+63/15 15/28+63/30 45/28+63/15 15/84+63/15 15/28+63/45 75/28+63/15 15/28+63/75