Subtract 98/15 from 49/21
1st number: 2 7/21, 2nd number: 6 8/15
49/21 - 98/15 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
49/21 = 49 × 5/21 × 5 = 245/105 - Likewise, for the 2nd fraction, since 15 × 7 = 105,
98/15 = 98 × 7/15 × 7 = 686/105 - Subtract the two like fractions:
245/105 - 686/105 = 245 - 686/105 = -441/105 - After reducing the fraction, the answer is -21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-98/15 49/42-98/15 49/21-98/30 49/63-98/15 49/21-98/45 49/21-98/75