Subtract 18/9 from 28/16
1st number: 1 12/16, 2nd number: 2 0/9
28/16 - 18/9 is -1/4.
Steps for subtracting 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,
18/9 = 18 × 16/9 × 16 = 288/144 - Subtract the two like fractions:
252/144 - 288/144 = 252 - 288/144 = -36/144 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16-18/9 28/16-36/9 28/32-18/9 84/16-18/9 28/16-54/9 28/48-18/9 28/16-18/27 28/16-90/9 28/80-18/9 28/16-18/45 28/16-18/63