Subtract 12/7 from 63/18
1st number: 3 9/18, 2nd number: 1 5/7
63/18 - 12/7 is 25/14.
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,
63/18 = 63 × 7/18 × 7 = 441/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
12/7 = 12 × 18/7 × 18 = 216/126 - Subtract the two like fractions:
441/126 - 216/126 = 441 - 216/126 = 225/126 - After reducing the fraction, the answer is 25/14
- In mixed form: 111/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/18-24/7 63/36-12/7 63/18-12/14 63/18-36/7 63/54-12/7 63/18-12/21 63/18-60/7 63/90-12/7 63/18-12/35 63/18-84/7 63/18-12/49