Add 28/16 and 15/45
1st number: 1 12/16, 2nd number: 15/45
28/16 + 15/45 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
28/16 = 28 × 45/16 × 45 = 1260/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
15/45 = 15 × 16/45 × 16 = 240/720 - Add the two like fractions:
1260/720 + 240/720 = 1260 + 240/720 = 1500/720 - 1500/720 simplified gives 25/12
- So, 28/16 + 15/45 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16+15/45 28/16+30/45 28/32+15/45 28/16+15/90 84/16+15/45 28/48+15/45 28/16+75/45 28/80+15/45