Subtract 21/4 from 98/21
1st number: 4 14/21, 2nd number: 5 1/4
98/21 - 21/4 is -7/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
98/21 = 98 × 4/21 × 4 = 392/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
21/4 = 21 × 21/4 × 21 = 441/84 - Subtract the two like fractions:
392/84 - 441/84 = 392 - 441/84 = -49/84 - After reducing the fraction, the answer is -7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-42/4 98/42-21/4 98/21-21/8 98/21-63/4 98/63-21/4 98/21-21/12 98/21-21/20 98/21-21/28