Subtract 45/20 from 4/2
1st number: 2 0/2, 2nd number: 2 5/20
4/2 - 45/20 is -1/4.
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,
4/2 = 4 × 10/2 × 10 = 40/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Subtract the two like fractions:
40/20 - 45/20 = 40 - 45/20 = -5/20 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2-45/20 4/2-90/20 4/2-45/40 12/2-45/20 4/6-45/20 4/2-45/60 20/2-45/20 4/10-45/20 28/2-45/20 4/14-45/20