Subtract 10/18 from 70/42
1st number: 1 28/42, 2nd number: 10/18
70/42 - 10/18 is 10/9.
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,
70/42 = 70 × 3/42 × 3 = 210/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126 - Subtract the two like fractions:
210/126 - 70/126 = 210 - 70/126 = 140/126 - After reducing the fraction, the answer is 10/9
- In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-20/18 70/84-10/18 70/42-10/36 70/42-30/18 70/42-10/54 70/42-50/18 70/42-10/90 70/42-70/18