Subtract 56/16 from 28/72
1st number: 28/72, 2nd number: 3 8/16
28/72 - 56/16 is -28/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
28/72 = 28 × 2/72 × 2 = 56/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
56/16 = 56 × 9/16 × 9 = 504/144 - Subtract the two like fractions:
56/144 - 504/144 = 56 - 504/144 = -448/144 - After reducing the fraction, the answer is -28/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72-56/16 28/72-56/32 84/72-56/16 28/72-56/48 28/72-56/80