Add 15/28 and 80/45
1st number: 15/28, 2nd number: 1 35/45
15/28 + 80/45 is 583/252.
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,
15/28 = 15 × 45/28 × 45 = 675/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
80/45 = 80 × 28/45 × 28 = 2240/1260 - Add the two like fractions:
675/1260 + 2240/1260 = 675 + 2240/1260 = 2915/1260 - 2915/1260 simplified gives 583/252
- So, 15/28 + 80/45 = 583/252
In mixed form: 279/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28+80/45 15/56+80/45 15/28+80/90 45/28+80/45 15/84+80/45 75/28+80/45