Subtract 1/12 from 7/45
7/45 - 1/12 is 13/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
7/45 = 7 × 4/45 × 4 = 28/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
1/12 = 1 × 15/12 × 15 = 15/180 - Subtract the two like fractions:
28/180 - 15/180 = 28 - 15/180 = 13/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-1/12 7/45-2/12 7/90-1/12 7/45-1/24 21/45-1/12 7/45-3/12 7/45-1/36 35/45-1/12 7/45-5/12 7/45-1/60 49/45-1/12 7/45-7/12 7/45-1/84