Subtract 21/15 from 5/98
1st number: 5/98, 2nd number: 1 6/15
5/98 - 21/15 is -661/490.
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,
5/98 = 5 × 15/98 × 15 = 75/1470 - Likewise, for the 2nd fraction, since 15 × 98 = 1470,
21/15 = 21 × 98/15 × 98 = 2058/1470 - Subtract the two like fractions:
75/1470 - 2058/1470 = 75 - 2058/1470 = -1983/1470 - After reducing the fraction, the answer is -661/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/98-21/15 5/98-42/15 5/98-21/30 15/98-21/15 5/98-63/15 5/98-21/45 25/98-21/15 5/98-21/75 35/98-21/15