Subtract 45/60 from 20/50
20/50 - 45/60 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 60 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 50 × 6 = 300,
20/50 = 20 × 6/50 × 6 = 120/300 - Likewise, for the 2nd fraction, since 60 × 5 = 300,
45/60 = 45 × 5/60 × 5 = 225/300 - Subtract the two like fractions:
120/300 - 225/300 = 120 - 225/300 = -105/300 - After reducing the fraction, the answer is -7/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50-45/60 20/50-90/60 60/50-45/60