Subtract 7/30 from 18/98
18/98 - 7/30 is -73/1470.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
18/98 = 18 × 15/98 × 15 = 270/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
7/30 = 7 × 49/30 × 49 = 343/1470 - Subtract the two like fractions:
270/1470 - 343/1470 = 270 - 343/1470 = -73/1470
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/98-7/30 18/98-14/30 18/98-7/60 54/98-7/30 18/98-21/30 18/98-7/90 90/98-7/30 18/98-35/30 18/98-49/30