Subtract 10/20 from 9/2
1st number: 4 1/2, 2nd number: 10/20
9/2 - 10/20 is 4/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
9/2 = 9 × 10/2 × 10 = 90/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
10/20 = 10 × 1/20 × 1 = 10/20 - Subtract the two like fractions:
90/20 - 10/20 = 90 - 10/20 = 80/20 - After reducing the fraction, the answer is 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/2-10/20 9/4-10/20 9/2-10/40 27/2-10/20 9/2-30/20 9/6-10/20 9/2-10/60 45/2-10/20 9/2-50/20 9/10-10/20 63/2-10/20 9/2-70/20 9/14-10/20