Subtract 16/9 from 28/56
1st number: 28/56, 2nd number: 1 7/9
28/56 - 16/9 is -23/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 9 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
28/56 = 28 × 9/56 × 9 = 252/504 - Likewise, for the 2nd fraction, since 9 × 56 = 504,
16/9 = 16 × 56/9 × 56 = 896/504 - Subtract the two like fractions:
252/504 - 896/504 = 252 - 896/504 = -644/504 - After reducing the fraction, the answer is -23/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56-32/9 28/56-16/18 84/56-16/9 28/56-48/9 28/56-16/27 28/56-80/9 28/56-16/45 28/56-16/63