Subtract 7/18 from 40/7
1st number: 5 5/7, 2nd number: 7/18
40/7 - 7/18 is 671/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
40/7 = 40 × 18/7 × 18 = 720/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
7/18 = 7 × 7/18 × 7 = 49/126 - Subtract the two like fractions:
720/126 - 49/126 = 720 - 49/126 = 671/126 - In mixed form: 541/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7-7/18 40/7-14/18 40/14-7/18 40/7-7/36 40/7-21/18 40/21-7/18 40/7-7/54 40/7-35/18 40/35-7/18 40/7-7/90 40/7-49/18 40/49-7/18