Subtract 3/54 from 50/42
1st number: 1 8/42, 2nd number: 3/54
50/42 - 3/54 is 143/126.
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,
50/42 = 50 × 9/42 × 9 = 450/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
3/54 = 3 × 7/54 × 7 = 21/378 - Subtract the two like fractions:
450/378 - 21/378 = 450 - 21/378 = 429/378 - After reducing the fraction, the answer is 143/126
- In mixed form: 117/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-6/54 50/84-3/54 50/42-9/54 50/42-15/54 50/42-21/54