Subtract 98/15 from 18/70
1st number: 18/70, 2nd number: 6 8/15
18/70 - 98/15 is -659/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
18/70 = 18 × 3/70 × 3 = 54/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
98/15 = 98 × 14/15 × 14 = 1372/210 - Subtract the two like fractions:
54/210 - 1372/210 = 54 - 1372/210 = -1318/210 - After reducing the fraction, the answer is -659/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70-98/15 18/70-98/30 54/70-98/15 18/70-98/45 90/70-98/15 18/70-98/75