Subtract 10/18 from 72/12
1st number: 6 0/12, 2nd number: 10/18
72/12 - 10/18 is 49/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
72/12 = 72 × 3/12 × 3 = 216/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
10/18 = 10 × 2/18 × 2 = 20/36 - Subtract the two like fractions:
216/36 - 20/36 = 216 - 20/36 = 196/36 - After reducing the fraction, the answer is 49/9
- In mixed form: 54/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12-20/18 72/24-10/18 72/12-10/36 72/12-30/18 72/36-10/18 72/12-10/54 72/12-50/18 72/60-10/18 72/12-10/90 72/12-70/18 72/84-10/18