Subtract 4/45 from 45/7
1st number: 6 3/7, 2nd number: 4/45
45/7 - 4/45 is 1997/315.
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,
45/7 = 45 × 45/7 × 45 = 2025/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
4/45 = 4 × 7/45 × 7 = 28/315 - Subtract the two like fractions:
2025/315 - 28/315 = 2025 - 28/315 = 1997/315 - In mixed form: 6107/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-4/45 45/7-8/45 45/14-4/45 45/7-4/90 45/7-12/45 45/21-4/45 45/7-20/45 45/35-4/45 45/7-28/45 45/49-4/45