Subtract 98/20 from 56/18
1st number: 3 2/18, 2nd number: 4 18/20
56/18 - 98/20 is -161/90.
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,
56/18 = 56 × 10/18 × 10 = 560/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
98/20 = 98 × 9/20 × 9 = 882/180 - Subtract the two like fractions:
560/180 - 882/180 = 560 - 882/180 = -322/180 - After reducing the fraction, the answer is -161/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/36-98/20 56/18-98/40 56/54-98/20 56/18-98/60 56/90-98/20