Subtract 98/18 from 45/12
1st number: 3 9/12, 2nd number: 5 8/18
45/12 - 98/18 is -61/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
45/12 = 45 × 3/12 × 3 = 135/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
98/18 = 98 × 2/18 × 2 = 196/36 - Subtract the two like fractions:
135/36 - 196/36 = 135 - 196/36 = -61/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-98/18 45/24-98/18 45/12-98/36 45/36-98/18 45/12-98/54 45/60-98/18 45/12-98/90 45/84-98/18