Subtract 21/50 from 42/7
1st number: 6 0/7, 2nd number: 21/50
42/7 - 21/50 is 279/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 7 × 50 = 350,
42/7 = 42 × 50/7 × 50 = 2100/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
21/50 = 21 × 7/50 × 7 = 147/350 - Subtract the two like fractions:
2100/350 - 147/350 = 2100 - 147/350 = 1953/350 - After reducing the fraction, the answer is 279/50
- In mixed form: 529/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-21/50 42/7-42/50 42/14-21/50 42/7-63/50 42/21-21/50 42/35-21/50 42/49-21/50