Subtract 54/10 from 20/4
1st number: 5 0/4, 2nd number: 5 4/10
20/4 - 54/10 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
20/4 = 20 × 5/4 × 5 = 100/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
54/10 = 54 × 2/10 × 2 = 108/20 - Subtract the two like fractions:
100/20 - 108/20 = 100 - 108/20 = -8/20 - After reducing the fraction, the answer is -2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4-54/10 20/8-54/10 20/4-54/20 60/4-54/10 20/12-54/10 20/4-54/30 20/4-54/50 20/28-54/10 20/4-54/70