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