Subtract 42/4 from 54/10
1st number: 5 4/10, 2nd number: 10 2/4
54/10 - 42/4 is -51/10.
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,
54/10 = 54 × 2/10 × 2 = 108/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20 - Subtract the two like fractions:
108/20 - 210/20 = 108 - 210/20 = -102/20 - After reducing the fraction, the answer is -51/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10-84/4 54/20-42/4 54/10-42/8 54/30-42/4 54/10-42/12 54/50-42/4 54/10-42/20 54/70-42/4 54/10-42/28