Subtract 10/54 from 80/42
1st number: 1 38/42, 2nd number: 10/54
80/42 - 10/54 is 325/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
80/42 = 80 × 9/42 × 9 = 720/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
10/54 = 10 × 7/54 × 7 = 70/378 - Subtract the two like fractions:
720/378 - 70/378 = 720 - 70/378 = 650/378 - After reducing the fraction, the answer is 325/189
- In mixed form: 1136/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42-20/54 80/84-10/54 80/42-30/54 80/42-50/54 80/42-70/54