Subtract 4/40 from 80/12
1st number: 6 8/12, 2nd number: 4/40
80/12 - 4/40 is 197/30.
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,
4/40 = 4 × 3/40 × 3 = 12/120 - Subtract the two like fractions:
800/120 - 12/120 = 800 - 12/120 = 788/120 - After reducing the fraction, the answer is 197/30
- In mixed form: 617/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-8/40 80/24-4/40 80/12-4/80 80/12-12/40 80/36-4/40 80/12-20/40 80/60-4/40 80/12-28/40 80/84-4/40