Subtract 27/21 from 30/98
1st number: 30/98, 2nd number: 1 6/21
30/98 - 27/21 is -48/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
30/98 = 30 × 3/98 × 3 = 90/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
27/21 = 27 × 14/21 × 14 = 378/294 - Subtract the two like fractions:
90/294 - 378/294 = 90 - 378/294 = -288/294 - After reducing the fraction, the answer is -48/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/98-27/21 30/98-54/21 30/98-27/42 90/98-27/21 30/98-81/21 30/98-27/63