Subtract 90/18 from 20/98
1st number: 20/98, 2nd number: 5 0/18
20/98 - 90/18 is -235/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 98 × 9 = 882,
20/98 = 20 × 9/98 × 9 = 180/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
90/18 = 90 × 49/18 × 49 = 4410/882 - Subtract the two like fractions:
180/882 - 4410/882 = 180 - 4410/882 = -4230/882 - After reducing the fraction, the answer is -235/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98-90/18 20/98-90/36 60/98-90/18 20/98-90/54