Subtract 12/45 from 2/12
2/12 - 12/45 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
2/12 = 2 × 15/12 × 15 = 30/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
12/45 = 12 × 4/45 × 4 = 48/180 - Subtract the two like fractions:
30/180 - 48/180 = 30 - 48/180 = -18/180 - 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: 4/12-12/45 2/12-24/45 2/24-12/45 2/12-12/90 6/12-12/45 2/12-36/45 2/36-12/45 10/12-12/45 2/12-60/45 2/60-12/45 14/12-12/45 2/12-84/45 2/84-12/45