Subtract 98/45 from 12/7
1st number: 1 5/7, 2nd number: 2 8/45
12/7 - 98/45 is -146/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
12/7 = 12 × 45/7 × 45 = 540/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
98/45 = 98 × 7/45 × 7 = 686/315 - Subtract the two like fractions:
540/315 - 686/315 = 540 - 686/315 = -146/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7-98/45 12/14-98/45 12/7-98/90 36/7-98/45 12/21-98/45 60/7-98/45 12/35-98/45 84/7-98/45 12/49-98/45