Subtract 30/36 from 4/12
4/12 - 30/36 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
4/12 = 4 × 3/12 × 3 = 12/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
30/36 = 30 × 1/36 × 1 = 30/36 - Subtract the two like fractions:
12/36 - 30/36 = 12 - 30/36 = -18/36 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-30/36 4/12-60/36 4/24-30/36 4/12-30/72 4/12-90/36 4/36-30/36 20/12-30/36 4/60-30/36 28/12-30/36 4/84-30/36