Subtract 30/81 from 28/96
28/96 - 30/81 is -17/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 81 is 2592
Next, find the equivalent fraction of both fractional numbers with denominator 2592 - For the 1st fraction, since 96 × 27 = 2592,
28/96 = 28 × 27/96 × 27 = 756/2592 - Likewise, for the 2nd fraction, since 81 × 32 = 2592,
30/81 = 30 × 32/81 × 32 = 960/2592 - Subtract the two like fractions:
756/2592 - 960/2592 = 756 - 960/2592 = -204/2592 - After reducing the fraction, the answer is -17/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/96-30/81 28/96-60/81 84/96-30/81 28/96-90/81