Subtract 54/14 from 21/6
1st number: 3 3/6, 2nd number: 3 12/14
21/6 - 54/14 is -5/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
21/6 = 21 × 7/6 × 7 = 147/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
54/14 = 54 × 3/14 × 3 = 162/42 - Subtract the two like fractions:
147/42 - 162/42 = 147 - 162/42 = -15/42 - After reducing the fraction, the answer is -5/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-54/14 21/12-54/14 21/6-54/28 63/6-54/14 21/18-54/14 21/6-54/42 21/30-54/14 21/6-54/70 21/42-54/14 21/6-54/98