Subtract 32/12 from 21/10
1st number: 2 1/10, 2nd number: 2 8/12
21/10 - 32/12 is -17/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
21/10 = 21 × 6/10 × 6 = 126/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
32/12 = 32 × 5/12 × 5 = 160/60 - Subtract the two like fractions:
126/60 - 160/60 = 126 - 160/60 = -34/60 - After reducing the fraction, the answer is -17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10-32/12 21/10-64/12 21/20-32/12 21/10-32/24 63/10-32/12 21/10-96/12 21/30-32/12 21/10-32/36 21/50-32/12 21/10-32/60 21/70-32/12 21/10-32/84