Subtract 48/9 from 21/12
1st number: 1 9/12, 2nd number: 5 3/9
21/12 - 48/9 is -43/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
21/12 = 21 × 3/12 × 3 = 63/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
48/9 = 48 × 4/9 × 4 = 192/36 - Subtract the two like fractions:
63/36 - 192/36 = 63 - 192/36 = -129/36 - After reducing the fraction, the answer is -43/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12-48/9 21/12-96/9 21/24-48/9 21/12-48/18 63/12-48/9 21/36-48/9 21/12-48/27 21/60-48/9 21/12-48/45 21/84-48/9 21/12-48/63