Subtract 9/96 from 20/21
20/21 - 9/96 is 577/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 96 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
20/21 = 20 × 32/21 × 32 = 640/672 - Likewise, for the 2nd fraction, since 96 × 7 = 672,
9/96 = 9 × 7/96 × 7 = 63/672 - Subtract the two like fractions:
640/672 - 63/672 = 640 - 63/672 = 577/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21-9/96 20/21-18/96 20/42-9/96 60/21-9/96 20/21-27/96 20/63-9/96 20/21-45/96 20/21-63/96