Subtract 1/72 from 18/12
1st number: 1 6/12, 2nd number: 1/72
18/12 - 1/72 is 107/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
18/12 = 18 × 6/12 × 6 = 108/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
1/72 = 1 × 1/72 × 1 = 1/72 - Subtract the two like fractions:
108/72 - 1/72 = 108 - 1/72 = 107/72 - In mixed form: 135/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-1/72 18/12-2/72 18/24-1/72 54/12-1/72 18/12-3/72 18/36-1/72 90/12-1/72 18/12-5/72 18/60-1/72 18/12-7/72 18/84-1/72