Subtract 45/48 from 40/50
40/50 - 45/48 is -11/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 48 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 50 × 24 = 1200,
40/50 = 40 × 24/50 × 24 = 960/1200 - Likewise, for the 2nd fraction, since 48 × 25 = 1200,
45/48 = 45 × 25/48 × 25 = 1125/1200 - Subtract the two like fractions:
960/1200 - 1125/1200 = 960 - 1125/1200 = -165/1200 - After reducing the fraction, the answer is -11/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50-45/48 40/50-90/48 40/50-45/96