Subtract 48/81 from 21/48
21/48 - 48/81 is -67/432.
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,
21/48 = 21 × 27/48 × 27 = 567/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
48/81 = 48 × 16/81 × 16 = 768/1296 - Subtract the two like fractions:
567/1296 - 768/1296 = 567 - 768/1296 = -201/1296 - After reducing the fraction, the answer is -67/432
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