Subtract 3/10 from 9/12
9/12 - 3/10 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 10 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Likewise, for the 2nd fraction, since 10 × 6 = 60,
3/10 = 3 × 6/10 × 6 = 18/60 - Subtract the two like fractions:
45/60 - 18/60 = 45 - 18/60 = 27/60 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-3/10 9/12-6/10 9/24-3/10 9/12-3/20 27/12-3/10 9/12-9/10 9/36-3/10 9/12-3/30 45/12-3/10 9/12-15/10 9/60-3/10 9/12-3/50 63/12-3/10 9/12-21/10 9/84-3/10 9/12-3/70