Subtract 15/81 from 7/48
7/48 - 15/81 is -17/432.
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,
7/48 = 7 × 27/48 × 27 = 189/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
15/81 = 15 × 16/81 × 16 = 240/1296 - Subtract the two like fractions:
189/1296 - 240/1296 = 189 - 240/1296 = -51/1296 - After reducing the fraction, the answer is -17/432
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