Subtract 63/12 from 30/9
1st number: 3 3/9, 2nd number: 5 3/12
30/9 - 63/12 is -23/12.
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,
30/9 = 30 × 4/9 × 4 = 120/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
63/12 = 63 × 3/12 × 3 = 189/36 - Subtract the two like fractions:
120/36 - 189/36 = 120 - 189/36 = -69/36 - After reducing the fraction, the answer is -23/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9-63/12 30/18-63/12 30/9-63/24 90/9-63/12 30/27-63/12 30/9-63/36 30/45-63/12 30/9-63/60 30/63-63/12 30/9-63/84