Add 28/16 and 30/9
1st number: 1 12/16, 2nd number: 3 3/9
28/16 + 30/9 is 61/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 9 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
28/16 = 28 × 9/16 × 9 = 252/144 - Likewise, for the 2nd fraction, since 9 × 16 = 144,
30/9 = 30 × 16/9 × 16 = 480/144 - Add the two like fractions:
252/144 + 480/144 = 252 + 480/144 = 732/144 - 732/144 simplified gives 61/12
- So, 28/16 + 30/9 = 61/12
In mixed form: 51/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16+30/9 28/16+60/9 28/32+30/9 28/16+30/18 84/16+30/9 28/16+90/9 28/48+30/9 28/16+30/27 28/80+30/9 28/16+30/45 28/16+30/63