Subtract 10/18 from 1/7
1/7 - 10/18 is -26/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
1/7 = 1 × 18/7 × 18 = 18/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126 - Subtract the two like fractions:
18/126 - 70/126 = 18 - 70/126 = -52/126 - After reducing the fraction, the answer is -26/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-10/18 1/7-20/18 1/14-10/18 1/7-10/36 3/7-10/18 1/7-30/18 1/21-10/18 1/7-10/54 5/7-10/18 1/7-50/18 1/35-10/18 1/7-10/90 1/7-70/18 1/49-10/18