Subtract 42/50 from 15/36
15/36 - 42/50 is -127/300.
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,
15/36 = 15 × 25/36 × 25 = 375/900 - Likewise, for the 2nd fraction, since 50 × 18 = 900,
42/50 = 42 × 18/50 × 18 = 756/900 - Subtract the two like fractions:
375/900 - 756/900 = 375 - 756/900 = -381/900 - After reducing the fraction, the answer is -127/300
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/36-42/50 15/36-84/50 15/72-42/50 45/36-42/50 75/36-42/50