Add 28/15 and 30/16
1st number: 1 13/15, 2nd number: 1 14/16
28/15 + 30/16 is 449/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
28/15 = 28 × 16/15 × 16 = 448/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
30/16 = 30 × 15/16 × 15 = 450/240 - Add the two like fractions:
448/240 + 450/240 = 448 + 450/240 = 898/240 - 898/240 simplified gives 449/120
- So, 28/15 + 30/16 = 449/120
In mixed form: 389/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+30/16 28/15+60/16 28/30+30/16 28/15+30/32 84/15+30/16 28/15+90/16 28/45+30/16 28/15+30/48 28/75+30/16 28/15+30/80