Subtract 21/50 from 20/12
1st number: 1 8/12, 2nd number: 21/50
20/12 - 21/50 is 187/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 50 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
20/12 = 20 × 25/12 × 25 = 500/300 - Likewise, for the 2nd fraction, since 50 × 6 = 300,
21/50 = 21 × 6/50 × 6 = 126/300 - Subtract the two like fractions:
500/300 - 126/300 = 500 - 126/300 = 374/300 - After reducing the fraction, the answer is 187/150
- In mixed form: 137/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-21/50 20/12-42/50 20/24-21/50 60/12-21/50 20/12-63/50 20/36-21/50 20/60-21/50 20/84-21/50