Subtract 7/20 from 80/9
1st number: 8 8/9, 2nd number: 7/20
80/9 - 7/20 is 1537/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
80/9 = 80 × 20/9 × 20 = 1600/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
7/20 = 7 × 9/20 × 9 = 63/180 - Subtract the two like fractions:
1600/180 - 63/180 = 1600 - 63/180 = 1537/180 - In mixed form: 897/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-14/20 80/18-7/20 80/9-7/40 80/9-21/20 80/27-7/20 80/9-7/60 80/9-35/20 80/45-7/20 80/9-49/20 80/63-7/20