Subtract 72/7 from 10/54
1st number: 10/54, 2nd number: 10 2/7
10/54 - 72/7 is -1909/189.
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,
10/54 = 10 × 7/54 × 7 = 70/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
72/7 = 72 × 54/7 × 54 = 3888/378 - Subtract the two like fractions:
70/378 - 3888/378 = 70 - 3888/378 = -3818/378 - After reducing the fraction, the answer is -1909/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/54-72/7 10/54-72/14 30/54-72/7 10/54-72/21 50/54-72/7 10/54-72/35 70/54-72/7 10/54-72/49