Subtract 20/16 from 8/12
1st number: 8/12, 2nd number: 1 4/16
8/12 - 20/16 is -7/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
8/12 = 8 × 4/12 × 4 = 32/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
20/16 = 20 × 3/16 × 3 = 60/48 - Subtract the two like fractions:
32/48 - 60/48 = 32 - 60/48 = -28/48 - After reducing the fraction, the answer is -7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-20/16 8/12-40/16 8/24-20/16 8/12-20/32 24/12-20/16 8/12-60/16 8/36-20/16 8/12-20/48 40/12-20/16 8/60-20/16 8/12-20/80 56/12-20/16 8/84-20/16