Subtract 3/18 from 4/30
4/30 - 3/18 is -1/30.
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,
4/30 = 4 × 3/30 × 3 = 12/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Subtract the two like fractions:
12/90 - 15/90 = 12 - 15/90 = -3/90 - After reducing the fraction, the answer is -1/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-3/18 4/30-6/18 4/60-3/18 4/30-3/36 12/30-3/18 4/30-9/18 4/90-3/18 4/30-3/54 20/30-3/18 4/30-15/18 4/30-3/90 28/30-3/18 4/30-21/18