Subtract 3/7 from 40/18
1st number: 2 4/18, 2nd number: 3/7
40/18 - 3/7 is 113/63.
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,
3/7 = 3 × 18/7 × 18 = 54/126 - Subtract the two like fractions:
280/126 - 54/126 = 280 - 54/126 = 226/126 - After reducing the fraction, the answer is 113/63
- In mixed form: 150/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-3/7 40/18-6/7 40/36-3/7 40/18-3/14 40/18-9/7 40/54-3/7 40/18-3/21 40/18-15/7 40/90-3/7 40/18-3/35 40/18-21/7 40/18-3/49