Subtract 48/90 from 20/98
20/98 - 48/90 is -242/735.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 98 × 45 = 4410,
20/98 = 20 × 45/98 × 45 = 900/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
48/90 = 48 × 49/90 × 49 = 2352/4410 - Subtract the two like fractions:
900/4410 - 2352/4410 = 900 - 2352/4410 = -1452/4410 - After reducing the fraction, the answer is -242/735
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98-48/90 20/98-96/90 60/98-48/90