Subtract 5/98 from 21/90
21/90 - 5/98 is 134/735.
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,
21/90 = 21 × 49/90 × 49 = 1029/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
5/98 = 5 × 45/98 × 45 = 225/4410 - Subtract the two like fractions:
1029/4410 - 225/4410 = 1029 - 225/4410 = 804/4410 - After reducing the fraction, the answer is 134/735
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90-5/98 21/90-10/98 63/90-5/98 21/90-15/98 21/90-25/98 21/90-35/98