Subtract 1/98 from 1/90
1/90 - 1/98 is 2/2205.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
1/90 = 1 × 49/90 × 49 = 49/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
1/98 = 1 × 45/98 × 45 = 45/4410 - Subtract the two like fractions:
49/4410 - 45/4410 = 49 - 45/4410 = 4/4410 - After reducing the fraction, the answer is 2/2205
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-1/98 1/90-2/98 3/90-1/98 1/90-3/98 5/90-1/98 1/90-5/98 7/90-1/98 1/90-7/98