Subtract 42/54 from 45/7
1st number: 6 3/7, 2nd number: 42/54
45/7 - 42/54 is 356/63.
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,
45/7 = 45 × 54/7 × 54 = 2430/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378 - Subtract the two like fractions:
2430/378 - 294/378 = 2430 - 294/378 = 2136/378 - After reducing the fraction, the answer is 356/63
- In mixed form: 541/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-42/54 45/7-84/54 45/14-42/54 45/21-42/54 45/35-42/54 45/49-42/54