Subtract 25/8 from 20/98
1st number: 20/98, 2nd number: 3 1/8
20/98 - 25/8 is -1145/392.
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,
20/98 = 20 × 4/98 × 4 = 80/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
25/8 = 25 × 49/8 × 49 = 1225/392 - Subtract the two like fractions:
80/392 - 1225/392 = 80 - 1225/392 = -1145/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98-25/8 20/98-50/8 20/98-25/16 60/98-25/8 20/98-75/8 20/98-25/24 20/98-25/40 20/98-25/56