Subtract 42/18 from 30/98
1st number: 30/98, 2nd number: 2 6/18
30/98 - 42/18 is -298/147.
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,
30/98 = 30 × 9/98 × 9 = 270/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
42/18 = 42 × 49/18 × 49 = 2058/882 - Subtract the two like fractions:
270/882 - 2058/882 = 270 - 2058/882 = -1788/882 - After reducing the fraction, the answer is -298/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/98-42/18 30/98-84/18 30/98-42/36 90/98-42/18 30/98-42/54 30/98-42/90