Add 63/28 and 15/45
1st number: 2 7/28, 2nd number: 15/45
63/28 + 15/45 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
63/28 = 63 × 45/28 × 45 = 2835/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
15/45 = 15 × 28/45 × 28 = 420/1260 - Add the two like fractions:
2835/1260 + 420/1260 = 2835 + 420/1260 = 3255/1260 - 3255/1260 simplified gives 31/12
- So, 63/28 + 15/45 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/28+30/45 63/56+15/45 63/28+15/90 63/84+15/45 63/28+75/45