Subtract 7/84 from 3/12
3/12 - 7/84 is 1/6.
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,
3/12 = 3 × 7/12 × 7 = 21/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
7/84 = 7 × 1/84 × 1 = 7/84 - Subtract the two like fractions:
21/84 - 7/84 = 21 - 7/84 = 14/84 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-7/84 3/12-14/84 3/24-7/84 9/12-7/84 3/12-21/84 3/36-7/84 15/12-7/84 3/12-35/84 3/60-7/84 21/12-7/84 3/12-49/84 3/84-7/84