Subtract 1/7 from 40/18
1st number: 2 4/18, 2nd number: 1/7
40/18 - 1/7 is 131/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
40/18 = 40 × 7/18 × 7 = 280/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
1/7 = 1 × 18/7 × 18 = 18/126 - Subtract the two like fractions:
280/126 - 18/126 = 280 - 18/126 = 262/126 - After reducing the fraction, the answer is 131/63
- In mixed form: 25/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-1/7 40/18-2/7 40/36-1/7 40/18-1/14 40/18-3/7 40/54-1/7 40/18-1/21 40/18-5/7 40/90-1/7 40/18-1/35 40/18-1/49