Subtract 8/45 from 7/12
7/12 - 8/45 is 73/180.
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,
7/12 = 7 × 15/12 × 15 = 105/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
8/45 = 8 × 4/45 × 4 = 32/180 - Subtract the two like fractions:
105/180 - 32/180 = 105 - 32/180 = 73/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12-8/45 7/12-16/45 7/24-8/45 7/12-8/90 21/12-8/45 7/12-24/45 7/36-8/45 35/12-8/45 7/12-40/45 7/60-8/45 49/12-8/45 7/12-56/45 7/84-8/45