Subtract 70/40 from 80/12
1st number: 6 8/12, 2nd number: 1 30/40
80/12 - 70/40 is 59/12.
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,
70/40 = 70 × 3/40 × 3 = 210/120 - Subtract the two like fractions:
800/120 - 210/120 = 800 - 210/120 = 590/120 - After reducing the fraction, the answer is 59/12
- In mixed form: 411/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/24-70/40 80/12-70/80 80/36-70/40 80/60-70/40 80/84-70/40