Subtract 1/64 from 20/30
20/30 - 1/64 is 125/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 64 is 960
Next, find the equivalent fraction of both fractional numbers with denominator 960 - For the 1st fraction, since 30 × 32 = 960,
20/30 = 20 × 32/30 × 32 = 640/960 - Likewise, for the 2nd fraction, since 64 × 15 = 960,
1/64 = 1 × 15/64 × 15 = 15/960 - Subtract the two like fractions:
640/960 - 15/960 = 640 - 15/960 = 625/960 - After reducing the fraction, the answer is 125/192
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30-1/64 20/30-2/64 20/60-1/64 60/30-1/64 20/30-3/64 20/90-1/64 20/30-5/64 20/30-7/64