Subtract 54/12 from 21/14
1st number: 1 7/14, 2nd number: 4 6/12
21/14 - 54/12 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 14 × 6 = 84,
21/14 = 21 × 6/14 × 6 = 126/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
54/12 = 54 × 7/12 × 7 = 378/84 - Subtract the two like fractions:
126/84 - 378/84 = 126 - 378/84 = -252/84 - After reducing the fraction, the answer is -3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-54/12 21/28-54/12 21/14-54/24 63/14-54/12 21/42-54/12 21/14-54/36 21/70-54/12 21/14-54/60 21/98-54/12 21/14-54/84