Subtract 3/54 from 12/7
1st number: 1 5/7, 2nd number: 3/54
12/7 - 3/54 is 209/126.
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,
12/7 = 12 × 54/7 × 54 = 648/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
3/54 = 3 × 7/54 × 7 = 21/378 - Subtract the two like fractions:
648/378 - 21/378 = 648 - 21/378 = 627/378 - After reducing the fraction, the answer is 209/126
- In mixed form: 183/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7-3/54 12/7-6/54 12/14-3/54 36/7-3/54 12/7-9/54 12/21-3/54 60/7-3/54 12/7-15/54 12/35-3/54 84/7-3/54 12/7-21/54 12/49-3/54