Subtract 4/80 from 3/98
3/98 - 4/80 is -19/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
3/98 = 3 × 40/98 × 40 = 120/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
4/80 = 4 × 49/80 × 49 = 196/3920 - Subtract the two like fractions:
120/3920 - 196/3920 = 120 - 196/3920 = -76/3920 - After reducing the fraction, the answer is -19/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/98-4/80 3/98-8/80 9/98-4/80 3/98-12/80 15/98-4/80 3/98-20/80 21/98-4/80 3/98-28/80