Subtract 70/81 from 28/48
28/48 - 70/81 is -91/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 48 × 27 = 1296,
28/48 = 28 × 27/48 × 27 = 756/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
70/81 = 70 × 16/81 × 16 = 1120/1296 - Subtract the two like fractions:
756/1296 - 1120/1296 = 756 - 1120/1296 = -364/1296 - After reducing the fraction, the answer is -91/324
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