Add 28/16 and 42/18
1st number: 1 12/16, 2nd number: 2 6/18
28/16 + 42/18 is 49/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 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 18 × 8 = 144,
42/18 = 42 × 8/18 × 8 = 336/144 - Add the two like fractions:
252/144 + 336/144 = 252 + 336/144 = 588/144 - 588/144 simplified gives 49/12
- So, 28/16 + 42/18 = 49/12
In mixed form: 41/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16+42/18 28/16+84/18 28/32+42/18 28/16+42/36 84/16+42/18 28/48+42/18 28/16+42/54 28/80+42/18 28/16+42/90