Subtract 80/8 from 28/9
1st number: 3 1/9, 2nd number: 10 0/8
28/9 - 80/8 is -62/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
28/9 = 28 × 8/9 × 8 = 224/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
80/8 = 80 × 9/8 × 9 = 720/72 - Subtract the two like fractions:
224/72 - 720/72 = 224 - 720/72 = -496/72 - After reducing the fraction, the answer is -62/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9-80/8 28/18-80/8 28/9-80/16 84/9-80/8 28/27-80/8 28/9-80/24 28/45-80/8 28/9-80/40 28/63-80/8 28/9-80/56