Subtract 3/84 from 45/12
1st number: 3 9/12, 2nd number: 3/84
45/12 - 3/84 is 26/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
3/84 = 3 × 1/84 × 1 = 3/84 - Subtract the two like fractions:
315/84 - 3/84 = 315 - 3/84 = 312/84 - After reducing the fraction, the answer is 26/7
- In mixed form: 35/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-3/84 45/12-6/84 45/24-3/84 45/12-9/84 45/36-3/84 45/12-15/84 45/60-3/84 45/12-21/84 45/84-3/84