Subtract 98/27 from 18/40
1st number: 18/40, 2nd number: 3 17/27
18/40 - 98/27 is -1717/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
18/40 = 18 × 27/40 × 27 = 486/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
98/27 = 98 × 40/27 × 40 = 3920/1080 - Subtract the two like fractions:
486/1080 - 3920/1080 = 486 - 3920/1080 = -3434/1080 - After reducing the fraction, the answer is -1717/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40-98/27 18/80-98/27 18/40-98/54 54/40-98/27 18/40-98/81 90/40-98/27