Subtract 84/40 from 80/12
1st number: 6 8/12, 2nd number: 2 4/40
80/12 - 84/40 is 137/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
80/12 = 80 × 10/12 × 10 = 800/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
84/40 = 84 × 3/40 × 3 = 252/120 - Subtract the two like fractions:
800/120 - 252/120 = 800 - 252/120 = 548/120 - After reducing the fraction, the answer is 137/30
- In mixed form: 417/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/24-84/40 80/12-84/80 80/36-84/40 80/60-84/40 80/84-84/40