Subtract 2/45 from 40/7
1st number: 5 5/7, 2nd number: 2/45
40/7 - 2/45 is 1786/315.
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,
40/7 = 40 × 45/7 × 45 = 1800/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
2/45 = 2 × 7/45 × 7 = 14/315 - Subtract the two like fractions:
1800/315 - 14/315 = 1800 - 14/315 = 1786/315 - In mixed form: 5211/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7-2/45 40/7-4/45 40/14-2/45 40/7-2/90 40/7-6/45 40/21-2/45 40/7-10/45 40/35-2/45 40/7-14/45 40/49-2/45