Subtract 15/20 from 3/32
3/32 - 15/20 is -21/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 20 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
3/32 = 3 × 5/32 × 5 = 15/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
15/20 = 15 × 8/20 × 8 = 120/160 - Subtract the two like fractions:
15/160 - 120/160 = 15 - 120/160 = -105/160 - After reducing the fraction, the answer is -21/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/32-15/20 3/32-30/20 3/64-15/20 3/32-15/40 9/32-15/20 3/32-45/20 3/96-15/20 3/32-15/60 15/32-15/20 3/32-75/20 21/32-15/20