Subtract 9/7 from 8/54
1st number: 8/54, 2nd number: 1 2/7
8/54 - 9/7 is -215/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
9/7 = 9 × 54/7 × 54 = 486/378 - Subtract the two like fractions:
56/378 - 486/378 = 56 - 486/378 = -430/378 - After reducing the fraction, the answer is -215/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/54-9/7 8/54-18/7 8/54-9/14 24/54-9/7 8/54-27/7 8/54-9/21 40/54-9/7 8/54-45/7 8/54-9/35 56/54-9/7 8/54-63/7 8/54-9/49