Subtract 28/50 from 12/36
12/36 - 28/50 is -17/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 50 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 36 × 25 = 900,
12/36 = 12 × 25/36 × 25 = 300/900 - Likewise, for the 2nd fraction, since 50 × 18 = 900,
28/50 = 28 × 18/50 × 18 = 504/900 - Subtract the two like fractions:
300/900 - 504/900 = 300 - 504/900 = -204/900 - After reducing the fraction, the answer is -17/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/36-28/50 12/36-56/50 12/72-28/50 12/36-84/50 60/36-28/50 84/36-28/50