Subtract 63/12 from 72/9
1st number: 8 0/9, 2nd number: 5 3/12
72/9 - 63/12 is 11/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
72/9 = 72 × 4/9 × 4 = 288/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
63/12 = 63 × 3/12 × 3 = 189/36 - Subtract the two like fractions:
288/36 - 189/36 = 288 - 189/36 = 99/36 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18-63/12 72/9-63/24 72/27-63/12 72/9-63/36 72/45-63/12 72/9-63/60 72/63-63/12 72/9-63/84