Subtract 25/8 from 7/98
1st number: 7/98, 2nd number: 3 1/8
7/98 - 25/8 is -171/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 98 × 4 = 392,
7/98 = 7 × 4/98 × 4 = 28/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
25/8 = 25 × 49/8 × 49 = 1225/392 - Subtract the two like fractions:
28/392 - 1225/392 = 28 - 1225/392 = -1197/392 - After reducing the fraction, the answer is -171/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/98-25/8 7/98-50/8 7/98-25/16 21/98-25/8 7/98-75/8 7/98-25/24 35/98-25/8 7/98-25/40 49/98-25/8 7/98-25/56