Subtract 45/50 from 3/18
3/18 - 45/50 is -11/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
3/18 = 3 × 25/18 × 25 = 75/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
45/50 = 45 × 9/50 × 9 = 405/450 - Subtract the two like fractions:
75/450 - 405/450 = 75 - 405/450 = -330/450 - After reducing the fraction, the answer is -11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18-45/50 3/18-90/50 3/36-45/50 9/18-45/50 3/54-45/50 15/18-45/50 3/90-45/50 21/18-45/50