Subtract 98/21 from 15/10
1st number: 1 5/10, 2nd number: 4 14/21
15/10 - 98/21 is -19/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
15/10 = 15 × 21/10 × 21 = 315/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
98/21 = 98 × 10/21 × 10 = 980/210 - Subtract the two like fractions:
315/210 - 980/210 = 315 - 980/210 = -665/210 - After reducing the fraction, the answer is -19/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-98/21 15/20-98/21 15/10-98/42 45/10-98/21 15/30-98/21 15/10-98/63 75/10-98/21 15/50-98/21 15/70-98/21