Subtract 3/20 from 4/64
4/64 - 3/20 is -7/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 20 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
4/64 = 4 × 5/64 × 5 = 20/320 - Likewise, for the 2nd fraction, since 20 × 16 = 320,
3/20 = 3 × 16/20 × 16 = 48/320 - Subtract the two like fractions:
20/320 - 48/320 = 20 - 48/320 = -28/320 - After reducing the fraction, the answer is -7/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/64-3/20 4/64-6/20 4/64-3/40 12/64-3/20 4/64-9/20 4/64-3/60 20/64-3/20 4/64-15/20 28/64-3/20 4/64-21/20