Subtract 28/50 from 12/18
12/18 - 28/50 is 8/75.
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,
12/18 = 12 × 25/18 × 25 = 300/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
28/50 = 28 × 9/50 × 9 = 252/450 - Subtract the two like fractions:
300/450 - 252/450 = 300 - 252/450 = 48/450 - After reducing the fraction, the answer is 8/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-28/50 12/18-56/50 12/36-28/50 36/18-28/50 12/18-84/50 12/54-28/50 60/18-28/50 12/90-28/50 84/18-28/50