Subtract 7/45 from 2/12
2/12 - 7/45 is 1/90.
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,
7/45 = 7 × 4/45 × 4 = 28/180 - Subtract the two like fractions:
30/180 - 28/180 = 30 - 28/180 = 2/180 - After reducing the fraction, the answer is 1/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/12-7/45 2/12-14/45 2/24-7/45 2/12-7/90 6/12-7/45 2/12-21/45 2/36-7/45 10/12-7/45 2/12-35/45 2/60-7/45 14/12-7/45 2/12-49/45 2/84-7/45