Subtract 80/40 from 4/12
1st number: 4/12, 2nd number: 2 0/40
4/12 - 80/40 is -5/3.
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,
4/12 = 4 × 10/12 × 10 = 40/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
80/40 = 80 × 3/40 × 3 = 240/120 - Subtract the two like fractions:
40/120 - 240/120 = 40 - 240/120 = -200/120 - After reducing the fraction, the answer is -5/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-80/40 4/24-80/40 4/36-80/40 20/12-80/40 4/60-80/40 28/12-80/40 4/84-80/40