Subtract 12/7 from 6/18
1st number: 6/18, 2nd number: 1 5/7
6/18 - 12/7 is -29/21.
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,
6/18 = 6 × 7/18 × 7 = 42/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
12/7 = 12 × 18/7 × 18 = 216/126 - Subtract the two like fractions:
42/126 - 216/126 = 42 - 216/126 = -174/126 - After reducing the fraction, the answer is -29/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/18-12/7 6/18-24/7 6/36-12/7 6/18-12/14 6/18-36/7 6/54-12/7 6/18-12/21 30/18-12/7 6/18-60/7 6/90-12/7 6/18-12/35 42/18-12/7 6/18-84/7 6/18-12/49