Subtract 7/48 from 7/81
7/81 - 7/48 is -77/1296.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 48 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 81 × 16 = 1296,
7/81 = 7 × 16/81 × 16 = 112/1296 - Likewise, for the 2nd fraction, since 48 × 27 = 1296,
7/48 = 7 × 27/48 × 27 = 189/1296 - Subtract the two like fractions:
112/1296 - 189/1296 = 112 - 189/1296 = -77/1296
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