Subtract 3/40 from 21/96
21/96 - 3/40 is 23/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 40 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 96 × 5 = 480,
21/96 = 21 × 5/96 × 5 = 105/480 - Likewise, for the 2nd fraction, since 40 × 12 = 480,
3/40 = 3 × 12/40 × 12 = 36/480 - Subtract the two like fractions:
105/480 - 36/480 = 105 - 36/480 = 69/480 - After reducing the fraction, the answer is 23/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/96-3/40 21/96-6/40 21/96-3/80 63/96-3/40 21/96-9/40 21/96-15/40 21/96-21/40