Subtract 15/64 from 56/90
56/90 - 15/64 is 1117/2880.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 90 × 32 = 2880,
56/90 = 56 × 32/90 × 32 = 1792/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
15/64 = 15 × 45/64 × 45 = 675/2880 - Subtract the two like fractions:
1792/2880 - 675/2880 = 1792 - 675/2880 = 1117/2880
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90-30/64 56/90-45/64 56/90-75/64