Subtract 50/21 from 6/12
1st number: 6/12, 2nd number: 2 8/21
6/12 - 50/21 is -79/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
6/12 = 6 × 7/12 × 7 = 42/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Subtract the two like fractions:
42/84 - 200/84 = 42 - 200/84 = -158/84 - After reducing the fraction, the answer is -79/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/24-50/21 6/12-50/42 18/12-50/21 6/36-50/21 6/12-50/63 30/12-50/21 6/60-50/21 42/12-50/21 6/84-50/21