Subtract 12/18 from 1/30
1/30 - 12/18 is -19/30.
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,
1/30 = 1 × 3/30 × 3 = 3/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Subtract the two like fractions:
3/90 - 60/90 = 3 - 60/90 = -57/90 - After reducing the fraction, the answer is -19/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30-12/18 1/30-24/18 1/60-12/18 1/30-12/36 3/30-12/18 1/30-36/18 1/90-12/18 1/30-12/54 5/30-12/18 1/30-60/18 1/30-12/90 7/30-12/18 1/30-84/18