Subtract 32/21 from 8/12
1st number: 8/12, 2nd number: 1 11/21
8/12 - 32/21 is -6/7.
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,
8/12 = 8 × 7/12 × 7 = 56/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
32/21 = 32 × 4/21 × 4 = 128/84 - Subtract the two like fractions:
56/84 - 128/84 = 56 - 128/84 = -72/84 - After reducing the fraction, the answer is -6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-32/21 8/12-64/21 8/24-32/21 8/12-32/42 24/12-32/21 8/12-96/21 8/36-32/21 8/12-32/63 40/12-32/21 8/60-32/21 56/12-32/21 8/84-32/21