Subtract 18/64 from 4/45
4/45 - 18/64 is -277/1440.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 45 × 64 = 2880,
4/45 = 4 × 64/45 × 64 = 256/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
18/64 = 18 × 45/64 × 45 = 810/2880 - Subtract the two like fractions:
256/2880 - 810/2880 = 256 - 810/2880 = -554/2880 - After reducing the fraction, the answer is -277/1440
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-18/64 4/45-36/64 4/90-18/64 12/45-18/64 4/45-54/64 20/45-18/64 4/45-90/64 28/45-18/64