Subtract 40/18 from 98/45
1st number: 2 8/45, 2nd number: 2 4/18
98/45 - 40/18 is -2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
98/45 = 98 × 2/45 × 2 = 196/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
40/18 = 40 × 5/18 × 5 = 200/90 - Subtract the two like fractions:
196/90 - 200/90 = 196 - 200/90 = -4/90 - After reducing the fraction, the answer is -2/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/45-80/18 98/90-40/18 98/45-40/36 98/45-40/54 98/45-40/90