Subtract 18/15 from 4/30
1st number: 4/30, 2nd number: 1 3/15
4/30 - 18/15 is -16/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
4/30 = 4 × 1/30 × 1 = 4/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
18/15 = 18 × 2/15 × 2 = 36/30 - Subtract the two like fractions:
4/30 - 36/30 = 4 - 36/30 = -32/30 - After reducing the fraction, the answer is -16/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-18/15 4/30-36/15 4/60-18/15 4/30-18/30 12/30-18/15 4/30-54/15 4/90-18/15 4/30-18/45 20/30-18/15 4/30-90/15 4/30-18/75 28/30-18/15