Subtract 15/10 from 20/5
1st number: 4 0/5, 2nd number: 1 5/10
20/5 - 15/10 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
20/5 = 20 × 2/5 × 2 = 40/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
15/10 = 15 × 1/10 × 1 = 15/10 - Subtract the two like fractions:
40/10 - 15/10 = 40 - 15/10 = 25/10 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5-15/10 20/5-30/10 20/10-15/10 20/5-15/20 60/5-15/10 20/5-45/10 20/15-15/10 20/5-15/30 20/5-75/10 20/25-15/10 20/5-15/50 20/35-15/10 20/5-15/70