Subtract 24/81 from 28/32
28/32 - 24/81 is 125/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 81 is 2592
Next, find the equivalent fraction of both fractional numbers with denominator 2592 - For the 1st fraction, since 32 × 81 = 2592,
28/32 = 28 × 81/32 × 81 = 2268/2592 - Likewise, for the 2nd fraction, since 81 × 32 = 2592,
24/81 = 24 × 32/81 × 32 = 768/2592 - Subtract the two like fractions:
2268/2592 - 768/2592 = 2268 - 768/2592 = 1500/2592 - After reducing the fraction, the answer is 125/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/32-24/81 28/32-48/81 28/64-24/81 84/32-24/81 28/32-72/81 28/96-24/81