Subtract 45/64 from 3/20
3/20 - 45/64 is -177/320.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 20 × 16 = 320,
3/20 = 3 × 16/20 × 16 = 48/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
45/64 = 45 × 5/64 × 5 = 225/320 - Subtract the two like fractions:
48/320 - 225/320 = 48 - 225/320 = -177/320
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-45/64 3/20-90/64 3/40-45/64 9/20-45/64 3/60-45/64 15/20-45/64 21/20-45/64