Subtract 20/40 from 14/64
14/64 - 20/40 is -9/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 40 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
14/64 = 14 × 5/64 × 5 = 70/320 - Likewise, for the 2nd fraction, since 40 × 8 = 320,
20/40 = 20 × 8/40 × 8 = 160/320 - Subtract the two like fractions:
70/320 - 160/320 = 70 - 160/320 = -90/320 - After reducing the fraction, the answer is -9/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/64-20/40 14/64-20/80 42/64-20/40 14/64-60/40 70/64-20/40 98/64-20/40