Subtract 63/98 from 2/90
2/90 - 63/98 is -391/630.
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,
2/90 = 2 × 49/90 × 49 = 98/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
63/98 = 63 × 45/98 × 45 = 2835/4410 - Subtract the two like fractions:
98/4410 - 2835/4410 = 98 - 2835/4410 = -2737/4410 - After reducing the fraction, the answer is -391/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/90-63/98 6/90-63/98 10/90-63/98 14/90-63/98