Subtract 98/15 from 18/12
1st number: 1 6/12, 2nd number: 6 8/15
18/12 - 98/15 is -151/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
98/15 = 98 × 4/15 × 4 = 392/60 - Subtract the two like fractions:
90/60 - 392/60 = 90 - 392/60 = -302/60 - After reducing the fraction, the answer is -151/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-98/15 18/24-98/15 18/12-98/30 54/12-98/15 18/36-98/15 18/12-98/45 90/12-98/15 18/60-98/15 18/12-98/75 18/84-98/15