Subtract 98/8 from 45/7
1st number: 6 3/7, 2nd number: 12 2/8
45/7 - 98/8 is -163/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
45/7 = 45 × 8/7 × 8 = 360/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
98/8 = 98 × 7/8 × 7 = 686/56 - Subtract the two like fractions:
360/56 - 686/56 = 360 - 686/56 = -326/56 - After reducing the fraction, the answer is -163/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-98/8 45/14-98/8 45/7-98/16 45/21-98/8 45/7-98/24 45/35-98/8 45/7-98/40 45/49-98/8 45/7-98/56