Subtract 40/54 from 84/12
1st number: 7 0/12, 2nd number: 40/54
84/12 - 40/54 is 169/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
84/12 = 84 × 9/12 × 9 = 756/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
40/54 = 40 × 2/54 × 2 = 80/108 - Subtract the two like fractions:
756/108 - 80/108 = 756 - 80/108 = 676/108 - After reducing the fraction, the answer is 169/27
- In mixed form: 67/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-80/54 84/24-40/54 84/36-40/54 84/60-40/54