Subtract 45/10 from 25/20
1st number: 1 5/20, 2nd number: 4 5/10
25/20 - 45/10 is -13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
25/20 = 25 × 1/20 × 1 = 25/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
45/10 = 45 × 2/10 × 2 = 90/20 - Subtract the two like fractions:
25/20 - 90/20 = 25 - 90/20 = -65/20 - After reducing the fraction, the answer is -13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/20-45/10 25/20-90/10 25/40-45/10 25/20-45/20 75/20-45/10 25/60-45/10 25/20-45/30 25/20-45/50 25/20-45/70