Subtract 8/98 from 7/40
7/40 - 8/98 is 183/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
7/40 = 7 × 49/40 × 49 = 343/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
8/98 = 8 × 20/98 × 20 = 160/1960 - Subtract the two like fractions:
343/1960 - 160/1960 = 343 - 160/1960 = 183/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40-8/98 7/40-16/98 7/80-8/98 21/40-8/98 7/40-24/98 35/40-8/98 7/40-40/98 49/40-8/98 7/40-56/98