Subtract 12/18 from 2/30
2/30 - 12/18 is -3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
2/30 = 2 × 3/30 × 3 = 6/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Subtract the two like fractions:
6/90 - 60/90 = 6 - 60/90 = -54/90 - After reducing the fraction, the answer is -3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/30-12/18 2/30-24/18 2/60-12/18 2/30-12/36 6/30-12/18 2/30-36/18 2/90-12/18 2/30-12/54 10/30-12/18 2/30-60/18 2/30-12/90 14/30-12/18 2/30-84/18