Subtract 36/40 from 8/12
8/12 - 36/40 is -7/30.
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,
8/12 = 8 × 10/12 × 10 = 80/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
36/40 = 36 × 3/40 × 3 = 108/120 - Subtract the two like fractions:
80/120 - 108/120 = 80 - 108/120 = -28/120 - After reducing the fraction, the answer is -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-36/40 8/12-72/40 8/24-36/40 8/12-36/80 24/12-36/40 8/36-36/40 40/12-36/40 8/60-36/40 56/12-36/40 8/84-36/40