Subtract 15/54 from 8/7
1st number: 1 1/7, 2nd number: 15/54
8/7 - 15/54 is 109/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
8/7 = 8 × 54/7 × 54 = 432/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
15/54 = 15 × 7/54 × 7 = 105/378 - Subtract the two like fractions:
432/378 - 105/378 = 432 - 105/378 = 327/378 - After reducing the fraction, the answer is 109/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/7-15/54 8/7-30/54 8/14-15/54 24/7-15/54 8/7-45/54 8/21-15/54 40/7-15/54 8/7-75/54 8/35-15/54 56/7-15/54 8/49-15/54