Subtract 1/48 from 42/81
42/81 - 1/48 is 215/432.
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,
42/81 = 42 × 16/81 × 16 = 672/1296 - Likewise, for the 2nd fraction, since 48 × 27 = 1296,
1/48 = 1 × 27/48 × 27 = 27/1296 - Subtract the two like fractions:
672/1296 - 27/1296 = 672 - 27/1296 = 645/1296 - After reducing the fraction, the answer is 215/432
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