Subtract 10/72 from 18/12
1st number: 1 6/12, 2nd number: 10/72
18/12 - 10/72 is 49/36.
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,
10/72 = 10 × 1/72 × 1 = 10/72 - Subtract the two like fractions:
108/72 - 10/72 = 108 - 10/72 = 98/72 - After reducing the fraction, the answer is 49/36
- In mixed form: 113/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-10/72 18/12-20/72 18/24-10/72 54/12-10/72 18/12-30/72 18/36-10/72 90/12-10/72 18/12-50/72 18/60-10/72 18/12-70/72 18/84-10/72