Subtract 24/15 from 21/98
1st number: 21/98, 2nd number: 1 9/15
21/98 - 24/15 is -97/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 15 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
21/98 = 21 × 15/98 × 15 = 315/1470 - Likewise, for the 2nd fraction, since 15 × 98 = 1470,
24/15 = 24 × 98/15 × 98 = 2352/1470 - Subtract the two like fractions:
315/1470 - 2352/1470 = 315 - 2352/1470 = -2037/1470 - After reducing the fraction, the answer is -97/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-24/15 21/98-48/15 21/98-24/30 63/98-24/15 21/98-72/15 21/98-24/45 21/98-24/75