Subtract 45/12 from 84/9
1st number: 9 3/9, 2nd number: 3 9/12
84/9 - 45/12 is 67/12.
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,
84/9 = 84 × 4/9 × 4 = 336/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
45/12 = 45 × 3/12 × 3 = 135/36 - Subtract the two like fractions:
336/36 - 135/36 = 336 - 135/36 = 201/36 - After reducing the fraction, the answer is 67/12
- In mixed form: 57/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-90/12 84/18-45/12 84/9-45/24 84/27-45/12 84/9-45/36 84/45-45/12 84/9-45/60 84/63-45/12 84/9-45/84