Subtract 15/7 from 30/98
1st number: 30/98, 2nd number: 2 1/7
30/98 - 15/7 is -90/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 7 is 98
Next, find the equivalent fraction of both fractional numbers with denominator 98 - For the 1st fraction, since 98 × 1 = 98,
30/98 = 30 × 1/98 × 1 = 30/98 - Likewise, for the 2nd fraction, since 7 × 14 = 98,
15/7 = 15 × 14/7 × 14 = 210/98 - Subtract the two like fractions:
30/98 - 210/98 = 30 - 210/98 = -180/98 - After reducing the fraction, the answer is -90/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/98-15/7 30/98-30/7 30/98-15/14 90/98-15/7 30/98-45/7 30/98-15/21 30/98-75/7 30/98-15/35 30/98-15/49