Subtract 5/40 from 80/9
1st number: 8 8/9, 2nd number: 5/40
80/9 - 5/40 is 631/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
80/9 = 80 × 40/9 × 40 = 3200/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
5/40 = 5 × 9/40 × 9 = 45/360 - Subtract the two like fractions:
3200/360 - 45/360 = 3200 - 45/360 = 3155/360 - After reducing the fraction, the answer is 631/72
- In mixed form: 855/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-10/40 80/18-5/40 80/9-5/80 80/9-15/40 80/27-5/40 80/9-25/40 80/45-5/40 80/9-35/40 80/63-5/40