Subtract 18/30 from 3/6
3/6 - 18/30 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
3/6 = 3 × 5/6 × 5 = 15/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
18/30 = 18 × 1/30 × 1 = 18/30 - Subtract the two like fractions:
15/30 - 18/30 = 15 - 18/30 = -3/30 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 3/6-36/30 3/12-18/30 3/6-18/60 9/6-18/30 3/6-54/30 3/18-18/30 3/6-18/90 15/6-18/30 3/6-90/30 3/30-18/30 21/6-18/30 3/42-18/30