Subtract 45/20 from 3/2
1st number: 1 1/2, 2nd number: 2 5/20
3/2 - 45/20 is -3/4.
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,
3/2 = 3 × 10/2 × 10 = 30/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Subtract the two like fractions:
30/20 - 45/20 = 30 - 45/20 = -15/20 - After reducing the fraction, the answer is -3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/2-45/20 3/2-90/20 3/4-45/20 3/2-45/40 9/2-45/20 3/6-45/20 3/2-45/60 15/2-45/20 3/10-45/20 21/2-45/20 3/14-45/20