Subtract 21/84 from 50/15
1st number: 3 5/15, 2nd number: 21/84
50/15 - 21/84 is 37/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
50/15 = 50 × 28/15 × 28 = 1400/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Subtract the two like fractions:
1400/420 - 105/420 = 1400 - 105/420 = 1295/420 - After reducing the fraction, the answer is 37/12
- In mixed form: 31/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15-42/84 50/30-21/84 50/15-63/84 50/45-21/84 50/75-21/84