Subtract 3/10 from 20/4
1st number: 5 0/4, 2nd number: 3/10
20/4 - 3/10 is 47/10.
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,
3/10 = 3 × 2/10 × 2 = 6/20 - Subtract the two like fractions:
100/20 - 6/20 = 100 - 6/20 = 94/20 - After reducing the fraction, the answer is 47/10
- In mixed form: 47/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4-3/10 20/4-6/10 20/8-3/10 20/4-3/20 60/4-3/10 20/4-9/10 20/12-3/10 20/4-3/30 20/4-15/10 20/4-3/50 20/4-21/10 20/28-3/10 20/4-3/70