Subtract 81/40 from 8/98
1st number: 8/98, 2nd number: 2 1/40
8/98 - 81/40 is -3809/1960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
8/98 = 8 × 20/98 × 20 = 160/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
81/40 = 81 × 49/40 × 49 = 3969/1960 - Subtract the two like fractions:
160/1960 - 3969/1960 = 160 - 3969/1960 = -3809/1960
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/98-81/40 8/98-81/80 24/98-81/40 40/98-81/40 56/98-81/40