Subtract 7/21 from 1/50
1/50 - 7/21 is -47/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
1/50 = 1 × 21/50 × 21 = 21/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
7/21 = 7 × 50/21 × 50 = 350/1050 - Subtract the two like fractions:
21/1050 - 350/1050 = 21 - 350/1050 = -329/1050 - After reducing the fraction, the answer is -47/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/50-7/21 1/50-14/21 1/50-7/42 3/50-7/21 1/50-7/63 5/50-7/21 1/50-35/21 7/50-7/21 1/50-49/21