Subtract 98/30 from 15/7
1st number: 2 1/7, 2nd number: 3 8/30
15/7 - 98/30 is -118/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
15/7 = 15 × 30/7 × 30 = 450/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
98/30 = 98 × 7/30 × 7 = 686/210 - Subtract the two like fractions:
450/210 - 686/210 = 450 - 686/210 = -236/210 - After reducing the fraction, the answer is -118/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-98/30 15/14-98/30 15/7-98/60 45/7-98/30 15/21-98/30 15/7-98/90 75/7-98/30 15/35-98/30 15/49-98/30