Subtract 56/18 from 25/42
1st number: 25/42, 2nd number: 3 2/18
25/42 - 56/18 is -317/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
25/42 = 25 × 3/42 × 3 = 75/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
56/18 = 56 × 7/18 × 7 = 392/126 - Subtract the two like fractions:
75/126 - 392/126 = 75 - 392/126 = -317/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-56/18 25/84-56/18 25/42-56/36 75/42-56/18 25/42-56/54 25/42-56/90