Subtract 3/10 from 12/18
12/18 - 3/10 is 11/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
3/10 = 3 × 9/10 × 9 = 27/90 - Subtract the two like fractions:
60/90 - 27/90 = 60 - 27/90 = 33/90 - After reducing the fraction, the answer is 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-3/10 12/18-6/10 12/36-3/10 12/18-3/20 36/18-3/10 12/18-9/10 12/54-3/10 12/18-3/30 60/18-3/10 12/18-15/10 12/90-3/10 12/18-3/50 84/18-3/10 12/18-21/10 12/18-3/70