Subtract 70/42 from 56/18
1st number: 3 2/18, 2nd number: 1 28/42
56/18 - 70/42 is 13/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 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 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126 - Subtract the two like fractions:
392/126 - 210/126 = 392 - 210/126 = 182/126 - After reducing the fraction, the answer is 13/9
- In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/36-70/42 56/18-70/84 56/54-70/42 56/90-70/42