Subtract 54/4 from 21/10
1st number: 2 1/10, 2nd number: 13 2/4
21/10 - 54/4 is -57/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
21/10 = 21 × 2/10 × 2 = 42/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
54/4 = 54 × 5/4 × 5 = 270/20 - Subtract the two like fractions:
42/20 - 270/20 = 42 - 270/20 = -228/20 - After reducing the fraction, the answer is -57/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10-54/4 21/20-54/4 21/10-54/8 63/10-54/4 21/30-54/4 21/10-54/12 21/50-54/4 21/10-54/20 21/70-54/4 21/10-54/28