Subtract 18/30 from 8/12
8/12 - 18/30 is 1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
8/12 = 8 × 5/12 × 5 = 40/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Subtract the two like fractions:
40/60 - 36/60 = 40 - 36/60 = 4/60 - After reducing the fraction, the answer is 1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-18/30 8/12-36/30 8/24-18/30 8/12-18/60 24/12-18/30 8/12-54/30 8/36-18/30 8/12-18/90 40/12-18/30 8/12-90/30 8/60-18/30 56/12-18/30 8/84-18/30