Subtract 70/7 from 10/18
1st number: 10/18, 2nd number: 10 0/7
10/18 - 70/7 is -85/9.
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,
10/18 = 10 × 7/18 × 7 = 70/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
70/7 = 70 × 18/7 × 18 = 1260/126 - Subtract the two like fractions:
70/126 - 1260/126 = 70 - 1260/126 = -1190/126 - After reducing the fraction, the answer is -85/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-70/7 10/36-70/7 10/18-70/14 30/18-70/7 10/54-70/7 10/18-70/21 50/18-70/7 10/90-70/7 10/18-70/35 70/18-70/7 10/18-70/49