Subtract 21/36 from 30/98
30/98 - 21/36 is -163/588.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 36 is 1764
Next, find the equivalent fraction of both fractional numbers with denominator 1764 - For the 1st fraction, since 98 × 18 = 1764,
30/98 = 30 × 18/98 × 18 = 540/1764 - Likewise, for the 2nd fraction, since 36 × 49 = 1764,
21/36 = 21 × 49/36 × 49 = 1029/1764 - Subtract the two like fractions:
540/1764 - 1029/1764 = 540 - 1029/1764 = -489/1764 - After reducing the fraction, the answer is -163/588
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/98-21/36 30/98-42/36 30/98-21/72 90/98-21/36 30/98-63/36