Subtract 35/4 from 21/12
1st number: 1 9/12, 2nd number: 8 3/4
21/12 - 35/4 is -7/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
35/4 = 35 × 3/4 × 3 = 105/12 - Subtract the two like fractions:
21/12 - 105/12 = 21 - 105/12 = -84/12 - After reducing the fraction, the answer is -7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12-35/4 21/12-70/4 21/24-35/4 21/12-35/8 63/12-35/4 21/36-35/4 21/12-35/12 21/60-35/4 21/12-35/20 21/84-35/4 21/12-35/28