Subtract 10/18 from 80/20
1st number: 4 0/20, 2nd number: 10/18
80/20 - 10/18 is 31/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
10/18 = 10 × 10/18 × 10 = 100/180 - Subtract the two like fractions:
720/180 - 100/180 = 720 - 100/180 = 620/180 - After reducing the fraction, the answer is 31/9
- In mixed form: 34/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-20/18 80/40-10/18 80/20-10/36 80/20-30/18 80/60-10/18 80/20-10/54 80/20-50/18 80/20-10/90 80/20-70/18