Subtract 12/20 from 98/18
1st number: 5 8/18, 2nd number: 12/20
98/18 - 12/20 is 218/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
98/18 = 98 × 10/18 × 10 = 980/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Subtract the two like fractions:
980/180 - 108/180 = 980 - 108/180 = 872/180 - After reducing the fraction, the answer is 218/45
- In mixed form: 438/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18-24/20 98/36-12/20 98/18-12/40 98/18-36/20 98/54-12/20 98/18-12/60 98/18-60/20 98/90-12/20 98/18-84/20