Subtract 75/54 from 8/7
1st number: 1 1/7, 2nd number: 1 21/54
8/7 - 75/54 is -31/126.
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,
75/54 = 75 × 7/54 × 7 = 525/378 - Subtract the two like fractions:
432/378 - 525/378 = 432 - 525/378 = -93/378 - After reducing the fraction, the answer is -31/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/7-75/54 8/14-75/54 24/7-75/54 8/21-75/54 40/7-75/54 8/35-75/54 56/7-75/54 8/49-75/54