Subtract 35/54 from 1/21
1/21 - 35/54 is -227/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
1/21 = 1 × 18/21 × 18 = 18/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
35/54 = 35 × 7/54 × 7 = 245/378 - Subtract the two like fractions:
18/378 - 245/378 = 18 - 245/378 = -227/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21-35/54 1/21-70/54 1/42-35/54 3/21-35/54 1/63-35/54 5/21-35/54 7/21-35/54