Subtract 3/7 from 56/18
1st number: 3 2/18, 2nd number: 3/7
56/18 - 3/7 is 169/63.
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,
56/18 = 56 × 7/18 × 7 = 392/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
3/7 = 3 × 18/7 × 18 = 54/126 - Subtract the two like fractions:
392/126 - 54/126 = 392 - 54/126 = 338/126 - After reducing the fraction, the answer is 169/63
- In mixed form: 243/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-6/7 56/36-3/7 56/18-3/14 56/18-9/7 56/54-3/7 56/18-3/21 56/18-15/7 56/90-3/7 56/18-3/35 56/18-21/7 56/18-3/49