Subtract 70/8 from 80/9
1st number: 8 8/9, 2nd number: 8 6/8
80/9 - 70/8 is 5/36.
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,
80/9 = 80 × 8/9 × 8 = 640/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
70/8 = 70 × 9/8 × 9 = 630/72 - Subtract the two like fractions:
640/72 - 630/72 = 640 - 630/72 = 10/72 - After reducing the fraction, the answer is 5/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-70/8 80/9-70/16 80/27-70/8 80/9-70/24 80/45-70/8 80/9-70/40 80/63-70/8 80/9-70/56