Subtract 50/12 from 21/84
1st number: 21/84, 2nd number: 4 2/12
21/84 - 50/12 is -47/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
50/12 = 50 × 7/12 × 7 = 350/84 - Subtract the two like fractions:
21/84 - 350/84 = 21 - 350/84 = -329/84 - After reducing the fraction, the answer is -47/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84-50/12 21/84-50/24 63/84-50/12 21/84-50/36 21/84-50/60 21/84-50/84